Calcium oxalate is soluble in dilute HCl. Explain.

Explanation

### Step-by-Step Solution:

1. **Understanding Calcium Oxalate**:
- Calcium oxalate has the chemical formula \( \text{CaC}_2\text{O}_4 \). It consists of calcium ions (\( \text{Ca}^{2+} \)) and oxalate ions (\( \text{C}_2\text{O}_4^{2-} \)).

2. **Nature of Dilute HCl**:
- Dilute hydrochloric acid (HCl) is a strong acid that dissociates completely in water to produce hydrogen ions (\( \text{H}^+ \)) and chloride ions (\( \text{Cl}^- \)).

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