Question

the same amount of electricity was passed through two separate electrolytic cells containing solutions of Nickel nitrate and chromium nitrate respectively if 0.3 gram of Nickel was deposited in the first cell then what is the amount of chromium deposited ​

Answer 1

Answer: 0.176

Explanation:

Answer 2

Answer:

The amount of chromium deposited is 0.1771g.

Explanation:

The oxidate state(Z) of Ni in Nickel nitrate Ni(NO₃)₂ is +2

The oxidate state(Z) of Cr in Chromium nitrate Cr(NO₃)₃ is +3

We know that,

$EW=\frac{MW}{Z}$

∴For Ni EW=58.7/2=29.35

For Cr EW=52/3=17.33

Assuming the charge passed to be 'c'.

The amount of Nickel deposited=0.3g (given)

Let the amount of Chromium deposited be x.

∴$\frac{0.3}{29.35}=\frac{x}{17.33}$

∴x=0.1771g

Therefore, the amount of chromium deposited is 0.1771g.