Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • A solution of Ni(No3)2 is electrolysed between platinum electrodes using a current of5 amperes for minutes. What mass of Ni is deposited at the cathode?

3.15     A solution of  Ni(No_{3})_{2}is electrolysed between platinum electrodes using a current of 5 amperes for 20  minutes. What mass of Ni is deposited at the cathode?

Answers (1)

best_answer

We are given: 

                          I  =  5A 

and                    t  =  20(60)  = 1200 sec.

So total charge =  5(1200)  =  6000 C.

The equation for nickel deposition will be:- 

                                 Ni^{+2}\ +\ 2e^-\ \rightarrow\ Ni

Thus, from 2F charge 58.7 g of nickel deposition takes place.

i.e.,                    2(96487)\ C \rightarrow 58.7\ g\ Ni   

So for 6000 C charge total nickel deposition will be:- 

                                       = \frac{58.7}{2\times96487}\times6000

or                                    = 1.825\ g

Hence 1.825 g Ni will be deposited in the given conditions.       

Posted by

Devendra Khairwa

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Central Sector Scheme of Scholarship 2025 applications open on scholarships.gov.in
anam-khan

CBSE Board 2025: Class 10th, 12th supplementary date sheet out; exams from July 15
anam-khan

CBSE issues final reminder to schools for supplementary exam LOC submission; submit by today without late fee

Latest Question