A : The molarity of 20 volume `H_(2)O_(2)` is 3.58 M.
R : Volume strengh `= 5.6 xx` M.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanantion of the assertion, then mark (2)
C. If assertion is true statements but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

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

### Step 1: Analyze the Assertion
The assertion states that the molarity of 20 volume hydrogen peroxide (H₂O₂) is 3.58 M.

To check if this is true, we need to use the relationship between volume strength and molarity. The volume strength of a solution is defined as the volume of oxygen gas (in liters) that can be liberated by 1 liter of the solution at standard temperature and pressure (STP).

For hydrogen peroxide, the relationship between volume strength (VS) and molarity (M) is given by:
\[ \text{Volume Strength} = 11.2 \times \text{Molarity} \]

Given that the volume strength is 20, we can set up the equation:
\[ 20 = 11.2 \times M \]

Now, we can solve for M:
\[ M = \frac{20}{11.2} \]
\[ M \approx 1.785 \, \text{M} \]

Since the calculated molarity (1.785 M) does not match the assertion (3.58 M), the assertion is **false**.

### Step 2: Analyze the Reason
The reason states that volume strength is equal to 5.6 times the molarity.

However, we know from our previous analysis that:
\[ \text{Volume Strength} = 11.2 \times \text{Molarity} \]

Thus, the statement that volume strength is equal to 5.6 times the molarity is also **false**.

### Conclusion
Both the assertion and the reason are false. Therefore, the correct option is that both the assertion and the reason are false.

### Final Answer
Both assertion and reason are false.

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