Write balanced chemical equation for the preparation of Glauber's salt in the laboratory.

Explanation

To prepare Glauber's salt (sodium sulfate decahydrate, Na2SO4·10H2O) in the laboratory, we can follow these steps:

### Step 1: Identify the Reactants
We need sodium hydroxide (NaOH) and sulfuric acid (H2SO4) as our reactants.

### Step 2: Write the Unbalanced Equation
The unbalanced chemical equation for the reaction between sodium hydroxide and sulfuric acid is:
\[ \text{NaOH} + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + \text{H}_2\text{O} \]
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