Lithapone is a mixture of

Options

A. `ZnSO_4,BaSO_4`
B. `ZnS,BaSO_4`
C. `ZnCO_3,BaSO_3`
D. `ZnS,HNO_3`

Explanation

**Step-by-Step Solution:**

1. **Understanding Lithopone**: Lithopone is identified as a white pigment. It is commonly used in various applications such as paints, inks, and paper products.

2. **Composition of Lithopone**: Lithopone is a mixture of two specific compounds: barium sulfate (BaSO4) and zinc sulfide (ZnS).

3. **Proportions in Lithopone**: In the mixture, zinc sulfide typically constitutes about 30% of the total composition. This indicates that the remaining 70% is barium sulfate.

4. **Chemical Reaction**: The formation of lithopone involves the co-precipitation of barium sulfate and zinc sulfide. The chemical reaction can be represented as:
\[ \text{BaSO}_4 + \text{ZnS} \rightarrow \text{Lithopone} \]

5. **Final Formula**: The overall formula for lithopone can be simplified to represent its components, which can be expressed as:
\[ \text{BaSO}_4 + \text{ZnS} \text{ (mixture)} \]

6. **Conclusion**: Therefore, lithopone is a mixture of barium sulfate and zinc sulfide.

**Final Answer**: Lithopone is a mixture of barium sulfate (BaSO4) and zinc sulfide (ZnS).

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