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Types of Redox Reactions

20 ml of 0.1M...

Question

20 ml of 0.1M NaOH solution is completely neutralised by 0.05M HCl solution. The volume of the acidic solution is:

40 m l

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10 m l

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15 m l

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25 m l

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Solution

The correct option is B $40 m l$
n-factor of NaOH = 1
n-factor of HCl = 1

As we know, $N_{1} V_{1} = N_{2} V_{2}$

$(0.1 \times 1) (.02) = (.05 \times 1) \times V_{2}$

$V_{2} = 0.04$ litre

$V_{2} = 40 m l$

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