Question 365: Current Electricity

Question

The electrochemical equivalent of a metal is $${3.35109^{ - 7}}$$ $$kg$$ per Coulomb. The mass of the metal liberated at the cathode when a $$3A$$ current is passed for $$2$$ seconds will be

Accepted Answer

The mass liberated $$m,$$ electrochemical equivalent of a metal $$Z,$$ are related as $$m = Zit$$
$$ \Rightarrow m = 3.3 	imes {10^{ - 7}} 	imes 3 	imes 2$$
$$ = 19.8 	imes {10^{ - 7}}\,kg$$

Answer

$$6.6 	imes {10^{57}}/kg$$

Answer

$$9.9 	imes {10^{ - 7}}\,kg$$

Answer

$$19.8 	imes {10^{ - 7}}\,kg$$

Answer

$$1.1 	imes {10^{ - 7}}\,kg$$

Current Electricity

The electrochemical equivalent of a metal is ${3.35109^{ - 7}} kg per Coulomb. The mass of the metal liberated at the cathode when a 3A current is passed for 2$ seconds will be

Choose the correct answer: