Igcse Model Questions Vol1 2018 Chemistry Question 10

Practice essay / theory question 10 from the 2018 Igcse Model Questions Vol1 Chemistry examination. This question covers Electrochemistry, Electrolysis .

Igcse Model Questions Vol1 2018 Chemistry Essay / Theory

Topics: Electrochemistry Electrolysis

Question 10 IGCSE_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • essay

An aqueous solution of sodium chloride (0.5 mol dm⁻³) is electrolysed in an electrolytic cell containing inert graphite electrodes. A constant current of 2.0 A is passed for 30 minutes. The temperature is 25 °C and the cell operates with 100 % current efficiency for the reactions shown. Answer the following:

Question Parts

( a )

Write the overall chemical equation for the electrolysis of the solution.

( b )

State the half‑reaction occurring at the cathode and at the anode, indicating which species is oxidised and which is reduced.

( c )

Calculate the volume of hydrogen gas (at STP) produced at the cathode during the 30‑minute period.

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About This Question

This is Igcse Model Questions Vol1 2018 Chemistry Question 10. It is one of the essay questions from the 2018 Igcse Model Questions Vol1 Chemistry examination.

The question covers Electrochemistry, Electrolysis .

View More Igcse Model Questions Vol1 2018 Chemistry Questions More Igcse Model Questions Vol1 Practice Questions Back to Questions

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