An electric current of 0.5 ampere was passed through acidulated water for one hour. Calculate the volume of hydrogen at STP produced. 1 coulomb of electricity deposits 0.00001 gm of hydrogen.

Solution

We have given that
current = 0.5 ampere
weight of H₂ (W) = ?

t = 1 hour = 3600 sec,
Z = 0.00001.

W = Z x c x t

= 0.00001 x 0.5 x 3600 g = 0.018 g
2g or H₂ at STP occupies = 22.4 litres
$∴$ 0.018 g of H₂ at STP occupies

$\frac{22.4}{2} \times 0.018 = 0.2016 litres .$
Hence, Volume of H₂ produced at STP = 0.2016 litres.

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The molar conductivity of 0.025 mol L^–1methanoic acid is 46.1 S cm² mol^–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H⁺) = 349.6 S cm²mol^–1 and λ° (HCOO^– ) = 54.6 s cm² mol^–1.

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Electrochemistry

An electric current of 0.5 ampere was passed through acidulated water for one hour. Calculate the volume of hydrogen at STP produced. 1 coulomb of electricity deposits 0.00001 gm of hydrogen.

Some More Questions From Electrochemistry Chapter

Can you store copper sulphate solutions in a Zinc pot?

Why does the conductivity of a solution decrease with dilution?

Suggest a way to determine the Λ°_m value of water.

The molar conductivity of 0.025 mol L^–1methanoic acid is 46.1 S cm² mol^–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H⁺) = 349.6 S cm²mol^–1 and λ° (HCOO^– ) = 54.6 s cm² mol^–1.

If the current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons flow through the wire?

Suggest a list of metals that are extracted electrolytically.

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For Daily Free Study Material Join wiredfaculty

Electrochemistry

An electric current of 0.5 ampere was passed through acidulated water for one hour. Calculate the volume of hydrogen at STP produced. 1 coulomb of electricity deposits 0.00001 gm of hydrogen.

Some More Questions From Electrochemistry Chapter

Can you store copper sulphate solutions in a Zinc pot?

Why does the conductivity of a solution decrease with dilution?

Suggest a way to determine the Λ°m value of water.

The molar conductivity of 0.025 mol L–1 methanoic acid is 46.1 S cm2 mol–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H+) = 349.6 S cm2 mol–1 and λ° (HCOO– ) = 54.6 s cm2 mol–1.

If the current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons flow through the wire?

Suggest a list of metals that are extracted electrolytically.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Suggest a way to determine the Λ°_m value of water.

The molar conductivity of 0.025 mol L^–1methanoic acid is 46.1 S cm² mol^–1. Calculate its degree of dissociation and dissociation constant. Give λ°(H⁺) = 349.6 S cm²mol^–1 and λ° (HCOO^– ) = 54.6 s cm² mol^–1.