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CBSE - XII Science - Chemistry - Electrochemistry
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Asked by Prashant DIGHE
22nd August 2020,
9:40 PM
CBSE - XII Science - Chemistry - Electrochemistry
Electrochemistry:- Comment on pH of solution after electrolysis of ZnSO4 in aqueous media by using Zn electrode.
Asked by avaneesh5116
7th August 2020,
5:24 PM
CBSE - XII Science - Chemistry - Electrochemistry
Aluminium is extracted by electrolysis of
Asked by harshpareek696
1st August 2020,
4:01 PM
CBSE - XII Science - Chemistry - Electrochemistry
Pls explain
Asked by sulaikhasulu393
22nd June 2020,
8:52 AM
CBSE - XII Science - Chemistry - Electrochemistry
TOTAL VOLUME OF GASES EVOLVED AT STP WHEN 36g OF H2O ARE COMPLETELY ELECTROLYSED BETWEEN PLATINUM ELECTRODES.
Asked by vasudesetti123
23rd May 2020,
8:13 PM
CBSE - XII Science - Chemistry - Electrochemistry
What happens to flow of electrons if we introduce two anodes at one end of the cathode
Asked by sakthisivasakthi1978
31st October 2019,
9:53 PM
CBSE - XII Science - Chemistry - Electrochemistry
Please answer this question.
Asked by Balbir
3rd October 2019,
10:39 PM
CBSE - XII Science - Chemistry - Electrochemistry
3.66 sum plz
Asked by lovemaan5500
19th August 2019,
11:14 PM
CBSE - XII Science - Chemistry - Electrochemistry
3.71 plz
Asked by lovemaan5500
19th August 2019,
11:13 PM
CBSE - XII Science - Chemistry - Electrochemistry
3.52 numerical plz
Asked by lovemaan5500
19th August 2019,
11:12 PM
CBSE - XII Science - Chemistry - Electrochemistry
3.57 plz
Asked by lovemaan5500
19th August 2019,
11:11 PM
CBSE - XII Science - Chemistry - Electrochemistry
Pl this question as fast as possible
Asked by jain.pradeep
19th July 2019,
9:49 PM
CBSE - XII Science - Chemistry - Electrochemistry
calculate the mass of silver deposited from silver nitrate solution by a current of 2A flowing for 30 minutes
Asked by chaudharij608
3rd July 2019,
3:07 PM
CBSE - XII Science - Chemistry - Electrochemistry
pls explain electroplating
Asked by Rohit7korhale
28th June 2019,
2:52 PM
CBSE - XII Science - Chemistry - Electrochemistry
what is molten nacl
Asked by Avadhut Katkar
7th October 2018,
11:35 PM
CBSE - XII Science - Chemistry - Electrochemistry
Calculate the no.of electrons lost or gained during electrolysis of 1 gm cu2+ ions
Asked by SANJEEVA
22nd July 2018,
3:32 PM
CBSE - XII Science - Chemistry - Electrochemistry
what is electrochemistry
Asked by haroonrashidgkp
26th March 2018,
7:05 PM
CBSE - XII Science - Chemistry - Electrochemistry
Cr metal can be placed out from an acidic solution containing 
Calculate (i) how many grams of Cr will be plated out by 24000 C?
(ii) how long will it take to plate out 1.5g of Cr by using 12.5 A current?
Asked by sunil2791
19th January 2018,
12:21 PM
CBSE - XII Science - Chemistry - Electrochemistry
Write the most effective electrolyte on the coagulation of Fe2O3.H2O/Fe3+ sol?
Asked by banga71
13th January 2018,
11:35 AM
CBSE - XII Science - Chemistry - Electrochemistry
Kindly give detailed answers to the following questions.
24 all parts
Asked by Varsneya Srinivas
24th December 2017,
9:58 AM
CBSE - XII Science - Chemistry - Electrochemistry
Predict the products of electrolysis of an aqueous solution of AgNO3 with silver electrodes. I wrote Ag+,NO3-,H+,OH-.Is it correct?
Asked by Kalita Padmanath
6th August 2017,
2:47 PM
CBSE - XII Science - Chemistry - Electrochemistry
why gold can be plated better from aucl3 out of aucl3 and naaucl4
Asked by vinodjoshi112233
6th June 2017,
9:22 PM
CBSE - XII Science - Chemistry - Electrochemistry
how to find log and antilogs of +ve and -ve number
Asked by mangesh
25th June 2016,
1:13 PM
CBSE - XII Science - Chemistry - Electrochemistry
how to plot graph of conductivity vs molar condutivity
Asked by mangesh
25th June 2016,
1:04 PM
CBSE - XII Science - Chemistry - Electrochemistry
100 ml of a neutral solution containing 0.2 g of copper was electrolysed till the whole of copper was deposited. The current strength was maintained at 1.2 amperes and the volume of solution was maintained at 100ml. Assuming 100% efficiency, find out the time taken for deposition of copper. [Atomic weight of copper = 63.58]
Asked by Topperlearning User
22nd June 2016,
1:54 PM
CBSE - XII Science - Chemistry - Electrochemistry
Calculate the weight of copper deposited when two faraday of electricity is passed through a cupric salt. (Atomic weight of copper = 63.5)
Asked by Topperlearning User
22nd June 2016,
1:54 PM
CBSE - XII Science - Chemistry - Electrochemistry
How many coulombs of electricity are required for the oxidation of 90 g of water?
Asked by Topperlearning User
22nd June 2016,
1:54 PM
CBSE - XII Science - Chemistry - Electrochemistry
How much maximum amount of Alumininum metal is deposited at cathode by passing one ampere current for 96500seconds through molten AlCl3?
Asked by sourabh7jain
7th June 2016,
11:41 AM
CBSE - XII Science - Chemistry - Electrochemistry
Three electrolytic cells, A,B,C containing solutions of 
respectively are connected in series. A steady current of 1.5 Amperes is passed through them until 1.45g of Silver was deposited at the cathode of cell B. How long did the current flow? What mass of Copper and Zinc was deposited?
respectively are connected in series. A steady current of 1.5 Amperes is passed through them until 1.45g of Silver was deposited at the cathode of cell B. How long did the current flow? What mass of Copper and Zinc was deposited?
Asked by Aswin
8th January 2016,
5:42 PM
CBSE - XII Science - Chemistry - Electrochemistry
6A current is passed for 19104 sec to deposit 78 g gold from a solution of AuCl4- then the mass of chlorine gas will be formed simultaneously at the anode of electrolytic cell?
Asked by thakurpratyush5
11th July 2015,
10:10 AM
CBSE - XII Science - Chemistry - Electrochemistry
in the electrolysis of alkaline water a total of one mole of gasses is evolved . The amount of water decomposed is
a) one mole
b)two mole
c) 1/3 mol
d)2/3 mole
Asked by thakurpratyush5
10th July 2015,
1:31 PM
CBSE - XII Science - Chemistry - Electrochemistry
Conductivity of 0.00241 M acetic acid solution is 7.896 10-5 S cm-1. Calculate its molar conductivity in this solution. If for acetic acid be 390.5 S cm2 mol‑1, what would be its dissociation constant? Or Three electrolytic cells A, B and C containing solutions of zinc sulphate, silver nitrate and copper sulphate, respectively are connected in series. A steady current of 1.5 ampere was passed through them until 1.45 g of silver were deposited at the cathode of cell B. How long did the current flow? What mass of copper and what mass of zinc were deposited in the concerned cells? (Atomic masses of Ag = 108, Zn = 65.4, Cu = 63.5)
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
A solution of a salt of a metal of atomic weight 112 was electrolysed for 150 minutes with a current of 0.15 amperes. The weight of metal deposited was 0.783 mg; find the equivalent weight and valency of the metal in the salt.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
An electric current was passed through two voltameter cells one containing copper sulphate (using copper electrodes) and the other containing silver nitrate solution (using silver electrodes). The increase in weights of cathode in two cases was respectively 0.189 gm and 0.648 gm. Calculate the chemical equivalent of copper, taking that of silver as 108.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
Name the cell commonly used in watches and video cameras. Also write the chemical reaction involved in it?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
What is the use of graphite rod in Lechlanche cell?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
The products obtained from the electrolysis of molten NaCl and aqueous NaCl are different. Explain?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
State the law of electrolysis given by Faraday which gives a relationship between mass of a substance and the charge flowing through it.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
Name the reactions which take place at the cathode and anode during electrolysis?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - Electrochemistry
A current of 9.65A is drawn from a Daniell cell for exactly one hour. If molar masses of Cu and Zn are 63.5 g/mol and 65.4 g/mol respectively, what would be the loss in mass at anode and gain in mass at cathode respectively?
Asked by Pragyashree Jain
2nd June 2014,
7:24 PM
CBSE - XII Science - Chemistry - Electrochemistry
how to Predict the products of electrolysis?
Asked by
27th February 2008,
5:51 PM
