---
title: "A student mixes aqueous sodium carbonate, \\(\\text{Na}_2\\text{CO}_3\\text{(aq)}\\), with excess aqueous hydrochloric acid, \\(\\text{HCl(aq)}\\), and observes vigorous bubbling due to the evolution of a gas. Which of the following is the correct balanced chemical equation for the overall reaction?"
description: "## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please […]"
url: "https://nerd-notes.com/ubq/119294/"
date_modified: "2026-08-19T12:39:41+00:00"
---

# A student mixes aqueous sodium carbonate, \(\text{Na}_2\text{CO}_3\text{(aq)}\), with excess aqueous hydrochloric acid, \(\text{HCl(aq)}\), and observes vigorous bubbling due to the evolution of a gas. Which of the following is the correct balanced chemical equation for the overall reaction?

A student mixes aqueous sodium carbonate, \(\text{Na}_2\text{CO}_3\text{(aq)}\), with excess aqueous hydrochloric acid, \(\text{HCl(aq)}\), and observes vigorous bubbling due to the evolution of a gas. Which of the following is the correct balanced chemical equation for the overall reaction?

- **A.** \(\text{Na}_2\text{CO}_3\text{(aq)} + 2\text{HCl(aq)} \rightarrow 2\text{NaCl(aq)} + \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)}\)
- **B.** \(\text{Na}_2\text{CO}_3\text{(aq)} + \text{HCl(aq)} \rightarrow \text{NaCl(aq)} + \text{H}_2\text{O(l)} + \text{CO}_2\text{(g)}\)
- **C.** \(\text{Na}_2\text{CO}_3\text{(aq)} + 2\text{HCl(aq)} \rightarrow 2\text{NaCl(aq)} + \text{H}_2\text{CO}_3\text{(aq)}\)
- **D.** \(\text{Na}_2\text{CO}_3\text{(aq)} + 2\text{HCl(aq)} \rightarrow 2\text{NaCl(aq)} + \text{H}_2\text{(g)} + \text{CO}_3\text{(g)}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119294/*