Question:
\(x\) ml of \(0.1\,M\) NaOH solution is diluted with distilled water to get \(250\) ml of \(0.01\,M\) solution. The value of \(x\) in ml is
\(x\) ml of \(0.1\,M\) NaOH solution is diluted with distilled water to get \(250\) ml of \(0.01\,M\) solution. The value of \(x\) in ml is
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In dilution problems, use \(M_1V_1=M_2V_2\). The solution becomes less concentrated after dilution.
Updated On: May 7, 2026
- \(12.5\)
- \(25\)
- \(37.5\)
- \(50\)
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The Correct Option is B
Solution and Explanation
Step 1: For dilution, the number of moles before and after dilution remains constant. \[ M_1V_1=M_2V_2 \]
Step 2: Given: \[ M_1=0.1\,M \] \[ V_1=x\,ml \] \[ M_2=0.01\,M \] \[ V_2=250\,ml \]
Step 3: Substitute in the dilution formula: \[ 0.1 \times x = 0.01 \times 250 \]
Step 4: Solve: \[ 0.1x=2.5 \] \[ x=\frac{2.5}{0.1} \] \[ x=25 \]
Step 5: Therefore, the required volume is: \[ \boxed{25\,ml} \]
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