Neco 2021 Chemistry Question 35

Practice objective / multiple choice question 35 from the 2021 Neco Chemistry examination.

Neco 2021 Chemistry Objective / Multiple Choice Medium Difficulty
Question 35 NECO • 2021 • CHEMISTRY • objective

An aqueous solution of sodium chloride is electrolysed with a constant current of \(2.00\ \text{A}\) for \(30.0\ \text{min}\). The current efficiency for chlorine gas production at the anode is \(90\%\). (a) Calculate the volume of chlorine gas (\(\mathrm{Cl_2}\)) generated at STP. (b) Determine the mass of sodium hydroxide (\(\mathrm{NaOH}\)) formed in the solution.

Answer Options

Correct Answer A. V_{Cl2} ≈ 0.38 L (STP); mass of NaOH formed ≈ 1.49 g
B. V_{Cl2} ≈ 0.45 L (STP); mass of NaOH formed ≈ 1.60 g
C. V_{Cl2} ≈ 0.38 L (STP); mass of NaOH formed ≈ 2.00 g
D. V_{Cl2} ≈ 0.30 L (STP); mass of NaOH formed ≈ 1.20 g
Correct Answer
A
Correct Option:
V_{Cl2} ≈ 0.38 L (STP); mass of NaOH formed ≈ 1.49 g

About This Question

This is Neco 2021 Chemistry Question 35. It is one of the objective questions from the 2021 Neco Chemistry examination.

Difficulty level: Medium .

View More Neco 2021 Chemistry Questions More Neco Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support