Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

find the molarity of 20% w/w NaOH
Asked by shipra015 | 08 May, 2020, 12:48: AM
answered-by-expert Expert Answer
consider space straight x space be space the space mass space of space solution Mass space of space NaOH space equals space fraction numerator straight x space cross times 20 over denominator 100 end fraction Molar space mass space of space NaOH space equals space 40 space straight g therefore Number space of space moles space equals bevelled fraction numerator open parentheses fraction numerator 20 straight x over denominator 100 end fraction close parentheses over denominator 40 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals straight x over 200 Mass space of space the space solvent equals space straight x minus fraction numerator 20 straight x over denominator 100 end fraction equals fraction numerator 80 straight x over denominator 100 end fraction therefore Molality space equals space fraction numerator left parenthesis straight x divided by 200 right parenthesis over denominator left parenthesis 80 straight x divided by 100 right parenthesis end fraction space cross times space 1000 space equals space 6.25 space straight M
Answered by Ramandeep | 08 May, 2020, 12:40: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 12-science - Chemistry
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 | 17 Apr, 2024, 11:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
120 GM Naoh is dissolved in 3dm³ aqcus solution find out its molarity and normality
Asked by sameerteli003 | 08 Apr, 2024, 11:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
5g of NaOH is dissolved in 500ml of water. find the molarity of the solution
question image
Asked by saritanohar22 | 13 Jan, 2024, 01:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
उस विलयन कि मोलरता की गणना कीजिए जिससे 5 ग्राम NaoH 450 ML विलियन में घुला हुआ है
Asked by kamlesh.kumar.malee | 20 Dec, 2023, 06:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
what is mole fraction
Asked by shamiyaali732 | 26 Sep, 2023, 02:00: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
what is titration
Asked by elabarman58 | 23 Jan, 2023, 09:39: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
what is molarity
question image
Asked by gauravrastogi577 | 16 Aug, 2022, 06:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
what is molarity
Asked by gauravrastogi577 | 16 Aug, 2022, 06:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
calculate the mass percentage of benzene and carbon tetrachloride. if 22g of benzene is dissolved in 122g of ccl4?
Asked by shiv.pama83 | 27 Nov, 2021, 05:50: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Chemistry
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 | 31 Aug, 2021, 01:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×