---
title: "A student performs an electrolysis experiment to decompose water. A constant current of \\(1.93 \\text{ A}\\) is passed through an acidified aqueous solution for \\(2{,}000 \\text{ s}\\). The oxidation half-reaction occurring at the anode is shown below.  \\[ 2\\text{H}_2\\text{O}(l) \\rightarrow \\text{O}_2(g) + 4\\text{H}^+(aq) + 4e^- \\]  Assuming ideal gas behavior, what volume of \\(\\text{O}_2(g)\\) is produced at STP (\\(0^\\circ\\text{C}\\) and \\(1.0 \\text{ atm}\\))? (Faraday’s constant: \\(F = 96{,}500 \\text{ C/mol } e^-\\); molar volume of an ideal gas at STP \\(= 22.4 \\text{ L/mol}\\).)"
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url: "https://nerd-notes.com/ubq/119867/"
date_modified: "2026-08-21T08:16:36+00:00"
---

# A student performs an electrolysis experiment to decompose water. A constant current of \(1.93 \text{ A}\) is passed through an acidified aqueous solution for \(2{,}000 \text{ s}\). The oxidation half-reaction occurring at the anode is shown below.

\[ 2\text{H}_2\text{O}(l) \rightarrow \text{O}_2(g) + 4\text{H}^+(aq) + 4e^- \]

Assuming ideal gas behavior, what volume of \(\text{O}_2(g)\) is produced at STP (\(0^\circ\text{C}\) and \(1.0 \text{ atm}\))? (Faraday’s constant: \(F = 96{,}500 \text{ C/mol } e^-\); molar volume of an ideal gas at STP \(= 22.4 \text{ L/mol}\).)

A student performs an electrolysis experiment to decompose water. A constant current of \(1.93 \text{ A}\) is passed through an acidified aqueous solution for \(2{,}000 \text{ s}\). The oxidation half-reaction occurring at the anode is shown below.

\[ 2\text{H}_2\text{O}(l) \rightarrow \text{O}_2(g) + 4\text{H}^+(aq) + 4e^- \]

Assuming ideal gas behavior, what volume of \(\text{O}_2(g)\) is produced at STP (\(0^\circ\text{C}\) and \(1.0 \text{ atm}\))? (Faraday's constant: \(F = 96{,}500 \text{ C/mol } e^-\); molar volume of an ideal gas at STP \(= 22.4 \text{ L/mol}\).)

- **A.** \(0.112 \text{ L}\)
- **B.** \(0.224 \text{ L}\)
- **C.** \(0.448 \text{ L}\)
- **D.** \(0.896 \text{ L}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119867/*