Question

Calculate the time in hours for collecting 24g of mg from mgcl2 using 1o ampere current

Answer 1

Given:

Mass of Mg collected, w = 24 gm

Amount of current, I = 10 A

To Find:

The time in hours to collect the amount of Mg.

Calculation:

- For Mg, we have:

n = 2

M.wt. = 24 gm/mol

- Using Faraday's first law of electrolysis, we get:

w = i × t × z

⇒ w = (i × t × M.wt.)/ (n × F)

⇒ t = (w × n × F) / (i × M.wt.)

⇒ t = (24× 2 × 96500) / (10 × 24)

⇒ t = 19300 s

⇒ t = 5.361 hours (approximately)

- So, 5.361 hours time is taken for collecting 24 gm of Mg from MgCl2 using 10 ampere current.