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CBSE - XII Science - Chemistry - Solutions
The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.
Asked by hannamaryphilip
17th April 2024,
11:20 PM
CBSE - XII Science - Chemistry - Solutions
120 GM Naoh is dissolved in 3dm³ aqcus solution find out its molarity and normality
Asked by sameerteli003
8th April 2024,
11:48 PM
CBSE - XII Science - Chemistry - Solutions
5g of NaOH is dissolved in 500ml of water. find the molarity of the solution
Asked by saritanohar22
13th January 2024,
1:25 PM
CBSE - XII Science - Chemistry - Solutions
उस विलयन कि मोलरता की गणना कीजिए जिससे 5 ग्राम NaoH 450 ML विलियन में घुला हुआ है
Asked by kamlesh.kumar.malee
20th December 2023,
6:59 AM
CBSE - XII Science - Chemistry - Solutions
what is mole fraction
Asked by shamiyaali732
26th September 2023,
2:00 AM
CBSE - XII Science - Chemistry - Solutions
what is titration
Asked by elabarman58
23rd January 2023,
9:39 AM
CBSE - XII Science - Chemistry - Solutions
what is molarity
Asked by gauravrastogi577
16th August 2022,
6:18 PM
CBSE - XII Science - Chemistry - Solutions
what is molarity
Asked by gauravrastogi577
16th August 2022,
6:17 PM
CBSE - XII Science - Chemistry - Solutions
calculate the mass percentage of benzene and carbon tetrachloride. if 22g of benzene is dissolved in 122g of ccl4?
Asked by shiv.pama83
27th November 2021,
5:50 AM
CBSE - XII Science - Chemistry - Solutions
NaCl is 100 % ionized in 0.02 molal aqueous solution. hence the ratio of elevation in boiling point to molal elevation constant is :
Asked by mdarsadazizh
31st August 2021,
1:02 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the freezing point depression expected for 0.0711m aqueous soln. of Na2SO4. If this solution actually Freezes at -0.320c, what would be the value of van’t Hoff Factor (Kf For water is 1.86kkgmol-1 )U
Asked by Monikavyas097
29th June 2021,
9:27 AM
CBSE - XII Science - Chemistry - Solutions
Henry law constant
Asked by tejasdhaware509
2nd April 2021,
12:46 AM
CBSE - XII Science - Chemistry - Solutions
The vapour pressure of pure benzene is 639.7mm of Hg and vapour pressure of solution of a solute in benzene is 631.9mm of Hg. Calculate the molality of solution.
Asked by pravinbgsbihar
24th February 2021,
8:17 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the molarity of NaOH in the solution prepared by dissolving it's 16g in enough water to form 500ml of the solution.
Asked by ravikumarmunnar2015
16th November 2020,
8:59 PM
CBSE - XII Science - Chemistry - Solutions
Calculate the molality of a 1 L solution of 93% H2SO4 (w/v). The density of the solution is 1.84 g/mol
Asked by Gaurav
9th November 2020,
12:30 AM
CBSE - XII Science - Chemistry - Solutions
Find the molarity of 5m NaOH solution haveing 1.5gm)ml
Asked by 01abhishek072005
18th September 2020,
10:08 PM
CBSE - XII Science - Chemistry - Solutions
calculate the molarity of a solution containing 5g of NaOH in 450ml solution
Asked by siddhaashu8
12th September 2020,
6:11 PM
CBSE - XII Science - Chemistry - Solutions
How many grams of NaOH will be needed to prepare 250ml of 0.1M solution
Asked by teenpreneur22
25th August 2020,
8:24 AM
CBSE - XII Science - Chemistry - Solutions
The solution of substance are mixed in following manner 480ml of 1.5M of 1st solution and 520ml of 1.2M of 2nd solution. What is the molarity of final mixture.
Asked by Pv808415
8th July 2020,
2:44 AM
CBSE - XII Science - Chemistry - Solutions
find out mole fraction of methanol in 5.2 m solution of methanol
Asked by ranjanasvadvekar
3rd June 2020,
12:43 PM
CBSE - XII Science - Chemistry - Solutions
What is molarity
Asked by kiransarkaria
30th May 2020,
4:09 PM
CBSE - XII Science - Chemistry - Solutions
find the molarity of 20% w/w NaOH
Asked by shipra015
8th May 2020,
12:48 AM
CBSE - XII Science - Chemistry - Solutions
How can we differentiate between questions related to wt by vol% and vol by vol% or wt by wt%
Asked by arunhys123
22nd April 2020,
8:24 PM
CBSE - XII Science - Chemistry - Solutions
Units of molality?
Asked by arunhys123
22nd April 2020,
3:48 PM
CBSE - XII Science - Chemistry - Solutions
How many gram of concentrated nitric acid solution should be used to prepare 500 ml of 2.0 M HNO3? The concentrated acid is 70 % HNO3. 1) 45.0 g conc. HNO3 2) 90.0 g conc. HNO3 3) 70.0 g conc. HNO3 4) 50.0 g conc. HNO3
Asked by okvgom
22nd April 2020,
12:18 PM
CBSE - XII Science - Chemistry - Solutions
Pls explain
Asked by mufeedatvp2000
18th April 2020,
4:59 PM
CBSE - XII Science - Chemistry - Solutions
What is aqueous solution? Give example.
Asked by sarswati.comchakia
15th April 2020,
5:44 PM
CBSE - XII Science - Chemistry - Solutions
almost all processes of body are in A ,here A is (a) solid solutions (b) liquid solutions (c) gaseous solution (d) none of these
Asked by tanaa
6th April 2020,
11:01 AM
CBSE - XII Science - Chemistry - Solutions
IS A SATURATED SOLUTION HOMOGENOUS OR HETEROGENOUS ? IS AN UNSATURATED SOLUTION HOMOGENOUS OR HETEROGENOUS ? IS A SUPER - SATURATED SOLUTION HOMOGENOUS OR HETEROGENOUS ? PLEASE EXPLAIN IN DETAIL.
Asked by kandappan
31st March 2020,
10:27 AM
CBSE - XII Science - Chemistry - Solutions
Partial pressure of hydrogen in h2o is 1 bar at 275 degrees celsius hennry costant of hydrogen in h2o is 71.18 bar solubility of h2 in h2o will be
Asked by farheenansari1698
25th February 2020,
6:03 PM
CBSE - XII Science - Chemistry - Solutions
please answer this
Asked by Prashant DIGHE
7th January 2020,
10:05 PM
CBSE - XII Science - Chemistry - Solutions
2.15 numerical plz
Asked by lovemaan5500
4th January 2020,
11:18 PM
CBSE - XII Science - Chemistry - Solutions
concentrated nitric acid used in the laboratory work is 68% nitric acid by mass in aqua solution what should be the molarity of such example of the acid if the density of the solution is 1.504 grams mL^-1
Asked by amzad739635
23rd August 2019,
10:10 PM
CBSE - XII Science - Chemistry - Solutions
what is the difference between saturated and super saturated solution
Asked by rekha
14th August 2019,
10:07 PM
CBSE - XII Science - Chemistry - Solutions
Mole fraction of glycerine in a solution of 36g of water and 46 g of glycerine
Asked by suryanshmishr
5th July 2019,
12:30 PM
CBSE - XII Science - Chemistry - Solutions
What are the differences between isotonic and isosmotic solution?
Asked by govtsecschoolnayaganv051
3rd June 2019,
3:37 PM
CBSE - XII Science - Chemistry - Solutions
what are isotonic solution?
Asked by sagarshashank26
2nd May 2019,
12:32 PM
CBSE - XII Science - Chemistry - Solutions
If there are two liquids in a beaker which reacts with each other then will it be considered a solution of liquid in liquid
Asked by govtsecschoolnayaganv051
15th April 2019,
2:50 PM
CBSE - XII Science - Chemistry - Solutions
What volume of 95 percentage sulphuric acid of density 1.85 g per centimetre cube and what mass of water must be taken to prepare hundred centimetre cube of 15% solution of sulphuric acid of density 1.1 g per centimetre cube
Asked by fathimaaza26112001
6th March 2019,
1:32 PM
CBSE - XII Science - Chemistry - Solutions
1.100 ques plz
Asked by lovemaan5500
30th January 2019,
11:59 AM
CBSE - XII Science - Chemistry - Solutions
The mole fraction of a very dilute aqueous solution is 0.05. Calculate the molarity of the solution.
Asked by lekhakarthikeyan
29th August 2018,
8:06 PM
CBSE - XII Science - Chemistry - Solutions
An aqueous solution of CUSO4 has molality 1.5m. What are the mole fractions of the solute and the solvent?
Asked by lekhakarthikeyan
29th August 2018,
12:50 PM
CBSE - XII Science - Chemistry - Solutions
Why does an azeotropic mixture distill without any change in composition ?
Asked by lekhakarthikeyan
25th August 2018,
9:24 PM
CBSE - XII Science - Chemistry - Solutions
A solution is prepared by mixing 100 ml of 0.1 M NH4OH and 200 ml of 0.2 M NH4CL . pKb of NH4OH is 4.8 . Then the pH of the solution is
Asked by Deepak
19th August 2018,
12:58 PM
CBSE - XII Science - Chemistry - Solutions
The density of 85% sulphuric acid is 1.7g/cm-3. What is the volume of the solution which contains 17g of sulphuric acid ?
Asked by pardeepkumar2281
13th May 2018,
8:16 AM
CBSE - XII Science - Chemistry - Solutions
3.6M sulphuric acid solution is 29% sulphuric acid {H2SO4} . calculate the DENSITY of the solution
Asked by pardeepkumar2281
13th May 2018,
8:12 AM
CBSE - XII Science - Chemistry - Solutions
The density of 10% by mass of KCl solution is 1.06g/cm-3. Calculate the MOLARITY and MOLALITY of the solution
Asked by pardeepkumar2281
13th May 2018,
8:10 AM
CBSE - XII Science - Chemistry - Solutions
Calculate the number of moles of methhanol in 5L of its 2m solution if the density of solution is 0.981Kg/L
Asked by pardeepkumar2281
13th May 2018,
8:06 AM
CBSE - XII Science - Chemistry - Solutions
Calculate the concentration of NaOH solution in g/ml which has the same normality of a solution of HCl of concentration 0.04g/ml
Asked by pardeepkumar2281
13th May 2018,
8:04 AM
CBSE - XII Science - Chemistry - Solutions
How many grams of concentrated NITRIC ACID solution should be used to prepare 250ml of 2M NITRIC ACID ? The concentrated acid is 70% NITRIC ACID {HNO3}
Asked by pardeepkumar2281
13th May 2018,
8:01 AM
CBSE - XII Science - Chemistry - Solutions
Calculate mole fraction of KI if the density of 20% (mass/mass) aqueous KI solution is 1.202 g/mL.
Asked by Diya
11th May 2018,
6:47 PM
CBSE - XII Science - Chemistry - Solutions
If the concentration of a solution is 2 M. Calculate the number of millimols present in 2 litres of the solution
Asked by nishtha02082002
20th April 2018,
11:21 PM
CBSE - XII Science - Chemistry - Solutions
which one is more concentrated 1M or 1m of solution? give reason.
Asked by gargimoitreyee
23rd March 2018,
1:07 PM
CBSE - XII Science - Chemistry - Solutions
1. How much urea(MB=60g/mol should be dissolved in 50gm of h20,so that its vapor pressure at room temp. is reduced by 25%.What is the molality of the solution obtained?
Asked by Prakash
1st December 2017,
10:21 PM
CBSE - XII Science - Chemistry - Solutions
1.If the density of water of lake is 1.25g/ml and One kg of lake water contains 92g of Na+ ions.
Calculate the molarity of Na+ions in this lake water.
Asked by Prakash
28th November 2017,
10:20 PM
CBSE - XII Science - Chemistry - Solutions
what is the mole fraction of alcohol in 10% alcohol w/w in water?
Asked by vasturushi
21st August 2017,
9:14 PM
CBSE - XII Science - Chemistry - Solutions
What role does the molecular interaction play in a solution of Ethanol and water.
Asked by Topperlearning User
20th June 2016,
12:08 PM
CBSE - XII Science - Chemistry - Solutions
What is interstitial solid solutions.
Asked by Topperlearning User
20th June 2016,
12:08 PM
CBSE - XII Science - Chemistry - Solutions
What is substitutional solid solutions.
Asked by Topperlearning User
20th June 2016,
12:08 PM
CBSE - XII Science - Chemistry - Solutions
Is 1 M (molar concentration) more concentrated than 1 m (molal concentration)?
Asked by saxena
22nd April 2016,
5:31 AM
CBSE - XII Science - Chemistry - Solutions
A solution of glucose (C6H12O6) IN WTER IS LABELLED AS10%. BY WEIGHT . WHAT WOULD BE THE MOLARITY OF THE SOLUTION?( MOLAR MASS OF GLUCOSE=180 G GM/MOL
Asked by Rajeev
6th March 2016,
10:44 PM
CBSE - XII Science - Chemistry - Solutions
What volume of 95% sulphuric acid (density = 1.85 g/mL) and what mass of water must be taken to prepare 100 mL of 15% solution of sulphuric acid (density = 1.10 g/mL) ?
Asked by abhinavsaini123
6th July 2015,
9:16 AM
CBSE - XII Science - Chemistry - Solutions
What is normality? Explain in detail pls
Asked by Shubhi Gupta
13th May 2015,
3:50 PM
CBSE - XII Science - Chemistry - Solutions
sir i want to ask what is vanthoff vector as i am not getting it so please can u help me
Asked by abhishek singh
26th April 2015,
10:35 AM
CBSE - XII Science - Chemistry - Solutions
a. Define the following terms: i. Mole fraction ii. Van't Hoff factor b. 100 mg of a protein is dissolved in enough water to make 10.0 mL of a solution. If this solution has an osmotic pressure of 13.3 mmHg at 25° C, what is the molar mass of protein? (R=0.0821 L atm mol-1 K-1 and 760 mmHg = 1 atm) or a. What is meant by: i. Colligative properties ii. Molality of a solution b. What concentration of nitrogen should be present in a glass of water at room temperature? Assume a temperature of 25°C, a total pressure of 1 atmosphere and mole fraction of nitrogen in air of 0.78. [KH for nitrogen = 8.42 x 10-7 M/mm Hg]
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
An antifreeze solution is prepared from 222.6 g of ethylene glycol [C2H4(OH)2] and 200 g of water. Calculate the molality of the solution. If the density of this solution be 1.072 g mL-1, what will be the molarity of the solution?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Discuss the effect of Temperature on Solubility of solids in Solvent.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Thermal pollution is merely waste heat that has been transferred to water or air. How the concentration of dissolved oxygen in water is be effected by thermal pollution?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Why for Potassium sulphate the solubility shows decrease on increasing temperature of solution?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Why for Sodium sulphate the solubility shows decrease on increasing temperature of solution.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
Neetu was suggested by physician to take boiled water but Neetu did not like the taste of it. Can you explain why water becomes tasteless on boiling?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
How many grams of HCl are in0 .075 L of 8M HNO3 solution (wt of HCl = 36.5 g/mol-1)?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Solutions
sir please give me all steps for doing numericals on these 3 topics ...
Asked by Hemandra Singh
15th May 2014,
8:41 AM
CBSE - XII Science - Chemistry - Solutions
the molar volume of liquid benzene , density is .887 g/ml increases by a factor 2750 as it vapourises at 20 degree celcius and that of liquid toulene is .876g/ml increases by a factor 7720 at 20 degree celcius .a solution of benzene and toulene at 20 degree celcius has a vapour pressure of 46 torr .find the mole fraction of benzene in the solution above the solution . {ans- .7336}
Asked by PratibhaPandey
11th May 2014,
6:42 PM
CBSE - XII Science - Chemistry - Solutions
What is Henry’s law? Explain with an example.
Asked by Topperlearning User
7th April 2014,
3:43 PM
CBSE - XII Science - Chemistry - Solutions
What is Bends? If a diver had the "bends", describe how this can be treated.
Asked by Topperlearning User
7th April 2014,
1:07 PM
CBSE - XII Science - Chemistry - Solutions
Hyperbaric therapy, which involves exposure to oxygen at higher than atmospheric pressure may be used to treat hypoxia (low oxygen supply in the tissues). Explain how the treatment works.
Asked by Topperlearning User
7th April 2014,
12:52 PM
CBSE - XII Science - Chemistry - Solutions
Champagne continues to ferment in the bottle. The fermentation produces CO2. Why is the cork wired on a bottle of champagne?
Asked by Topperlearning User
7th April 2014,
12:49 PM
CBSE - XII Science - Chemistry - Solutions
A Coke at room temperature does not cause much effervescence when opened suddenly. Why?
Asked by Topperlearning User
7th April 2014,
12:40 PM
CBSE - XII Science - Chemistry - Solutions
Why molality is more preferred way of measuring strength than molarity.
Asked by Topperlearning User
7th April 2014,
12:29 PM
CBSE - XII Science - Chemistry - Solutions
Does the vapour pressure of a solution depend on the nature of solute? this was given as true
Asked by
25th February 2008,
9:19 PM
