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Question

What volume of 0.20 M HCl is required to exactly neutralize 40 millilitres of 0.10 M NaOH?

A
50 ml
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B
40 ml
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C
20 ml
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D
10 ml
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E
8 ml
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Solution

The correct option is C 20 ml
MV=MV
M is the molarity of HCl (0.20 M).
V is the volume of HCl.
M is the molarity of NaOH (0.10 M).
V is the volume of NaOH (40 ml).
0.20×V=0.10×40
V=20 ml

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