A mixed salt of calcium acetate formate on dry distillation gives

Options

A. ethanal
B. methanal
C. propanone
D. All the three above

Answer

To solve the question regarding the products formed from the dry distillation of a mixed salt of calcium acetate and calcium formate, we can follow these steps:

### Step 1: Identify the Reactants
The mixed salt consists of:
- Calcium acetate: \( \text{Ca(C}_2\text{H}_3\text{O}_2\text{)}_2 \) or \( \text{Ca(CH}_3\text{COO)}_2 \)
- Calcium formate: \( \text{Ca(HCOO)}_2 \)

### Step 2: Write the Reaction for Dry Distillation
When calcium acetate and calcium formate undergo dry distillation, they decompose to form various products. The general reaction can be represented as:
\[ \text{Ca(C}_2\text{H}_3\text{O}_2\text{)}_2 + \text{Ca(HCOO)}_2 \rightarrow \text{Products} \]

### Step 3: Determine the Products
During dry distillation, the decomposition of these salts leads to the formation of:
- Acetaldehyde (ethanol): \( \text{CH}_3\text{CHO} \)
- Methanol: \( \text{CH}_3\text{OH} \)
- Propanone (acetone): \( \text{CH}_3\text{COCH}_3 \)

However, the primary product from the reaction of calcium acetate and calcium formate is acetaldehyde (ethanol).

### Step 4: Write the Balanced Equation
The balanced equation for the reaction can be represented as:
\[ \text{Ca(C}_2\text{H}_3\text{O}_2\text{)}_2 + \text{Ca(HCOO)}_2 \rightarrow 2 \text{CH}_3\text{CHO} + \text{CaCO}_3 \]
This indicates that the main product is acetaldehyde (ethanol) along with calcium carbonate.

### Step 5: Conclusion
From the analysis, we conclude that the primary product formed from the dry distillation of the mixed salt of calcium acetate and calcium formate is ethanol (acetaldehyde).

### Final Answer
The correct answer is **Ethanol**.

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