Reaction of potassium chromate and `CuSO_(4)` in aqueous solution produces:

Options

A. `CuCrO_(4)` only
B. `Cu_(5)[CrO_(4)]_(2)` only
C. `CuCr_(2)O_(7)` only
D. Both `CuCrO_(4)` and `CuCr_(2)O_(7)`.

Explanation

To solve the question regarding the reaction of potassium chromate (K2CrO4) and copper sulfate (CuSO4) in aqueous solution, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants:**
- The reactants are potassium chromate (K2CrO4) and copper sulfate (CuSO4).

2. **Write the Chemical Formulas:**
- Potassium chromate: K2CrO4
- Copper sulfate: CuSO4

3. **Determine the Reaction:**
- When potassium chromate reacts with copper sulfate in an aqueous solution, a double displacement reaction occurs. The products of this reaction will be copper chromate (CuCrO4) and potassium sulfate (K2SO4).

4. **Write the Balanced Equation:**
- The balanced chemical equation for the reaction is:
\[ K_2CrO_4 + CuSO_4 \rightarrow CuCrO_4 + K_2SO_4 \]

5. **Consider the Acidic Nature of the Solution:**
- Since CuSO4 is in an aqueous solution, it can hydrolyze to produce H+ ions, making the solution acidic. In an acidic medium, chromate ions (CrO4^2-) can convert to dichromate ions (Cr2O7^2-).

6. **Formation of Additional Products:**
- In the presence of the acidic medium, the chromate ions can convert to dichromate ions, leading to the formation of copper dichromate (CuCr2O7) in addition to copper chromate.

7. **Final Products:**
- Therefore, the final products of the reaction are:
- Copper chromate (CuCrO4)
- Copper dichromate (CuCr2O7)

8. **Select the Correct Option:**
- Based on the products formed, the correct answer is that the reaction produces both CuCrO4 and CuCr2O7.

### Conclusion:
The reaction of potassium chromate and copper sulfate in aqueous solution produces both CuCrO4 and CuCr2O7.

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