Assertion A: Empiricial formula of glucose or that of acetic acid is `CH_(2)O`.
Reason(R):If percentage composition of elements is same, then empirical formula is same.
The correct answer is

Options

A. Both A and R are true and R is the correct explanation of (A)
B. Both A and R are true and R is not the correct explanation of A.
C. A is true but R is false
D. A is false but R is true

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states that the empirical formula of glucose or that of acetic acid is \( CH_2O \).

- **Glucose** has the molecular formula \( C_6H_{12}O_6 \). To find the empirical formula, we divide the subscripts by the greatest common divisor, which is 6:
\[ \text{Empirical formula of glucose} = \frac{C_6H_{12}O_6}{6} = CH_2O \]

- **Acetic Acid** has the molecular formula \( C_2H_4O_2 \). Similarly, we divide the subscripts by the greatest common divisor, which is 2:
\[ \text{Empirical formula of acetic acid} = \frac{C_2H_4O_2}{2} = CH_2O \]

Thus, both glucose and acetic acid have the empirical formula \( CH_2O \). Therefore, the assertion is **true**.

### Step 2: Analyze the Reason
The reason states that if the percentage composition of elements is the same, then the empirical formula is the same.

This statement is also **true**. The empirical formula is derived from the percentage composition of the elements in a compound. If two compounds have the same percentage composition of elements, they will have the same empirical formula.

### Step 3: Conclusion
Since both the assertion and the reason are true, and the reason correctly explains the assertion, the correct answer is:

**Both A and R are true, and R is the correct explanation of A.**

### Final Answer
The correct answer is: **Both A and R are true, and R is the correct explanation of A.**

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