Home
Class 12
CHEMISTRY
An electric current is passed through a ...

An electric current is passed through a silver voltameter connected to a water voltameter. The cathode of the silver voltameter weighed `0.108`g more at the end of the electrolysis. The volume of oxygen evolved at STP is:

A

`56cm^(3)`

B

`550cm^(3)`

C

`5.6cm^(3)`

D

`11.2cm^(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
`("Mass of Ag deposited")/("Mass of" O_(2) "evolved")=("Eq. mass of Ag")/("Eq. mass of" O_(2))`
`(0.108)/(m(O_(2)))=(108)/(8)`
`m(O_(2))=(8xx0.108)/(108)=8xx10^(-3)g`
`32gO_(2)=22400 cm^(3)` at N.T.P.
`therefore 8xx10^(-3)g "of" O_(2)=(22400)/(32)xx8xx10^(-3)cm^(3)`
at N.T.P.
`=5.6cm^(3)` at N.T.P.
Promotional Banner

Similar Questions

Explore conceptually related problems

An electric current of 0.4 A is passed through a silver voltameter fro half an hour.Find the amount of silver deposited on the cathode. ECE of silver = 1.12 xx 10^(-4) kg C^(-1)

The same current if passed through solution of silver nitrate and cupric salt connected in series. If the weights of silver deposited is 1.08g . Calculate the weight of copper deposited

An electric current is passed through two voltameters connected in series and containing CuSO_4 and AgNO_3 solutions respectively. The masses of copper and silver deposited are 0.424 g and 1.44 g respectively. Find the equivalent mass of silver if that of copper is 31.75.

An electric current is passed through silver nitrate solution using silver electrodes. 15.28 g of silver was found to be deposited on catode. What will be the weight of copper deposited on cathode if same amount of electricity is passed through copper sulphate solution using copper electrodes?

When an electric current is passed through acidified water, 112ml of H_(2) gas at NTP is collected at the cathode is 965 seconds. The current passed in amperes is

A current of 3 amperes was passed through silver nitrate solution for 125 seconds. The amount of silver deposited at cathode was 0.42 g. Calculate the equivalent mass of silver.

When electric current is passed through acidified water for 1930 s, 1120 mL of H_(2) gas is collected (at STP) at the cathode. What is the current passed in amperes?

A steady current is passed for 25minutes through a silver voltmeter and ammeter in series and 0.559g of silver of deposited. The ammeter reads 0.3A. Find the error, if any, in the ammeter reading, given that the E.C.E. of silver =11.18xx10^(-7) kg C^(-1) .

A current of 1.0A is passed for 96.5s trhough a 200mL solution of 0.05 M LiCl solution. Find a. The volume of gases produced at STP b. The pH of solution at the end of electrolysis

When an electric current is passed through acidified water, 112 ml of hydrogen gas at N.T.P. is collected at the cathode in 965 seconds. The current passed, in amperes is: