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Question

4 L of water is added to 6 L of a 2 M HCl solution. What is the molarity of the resultant solution?

A
1.2 M
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B
8 M
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C
0.12 M
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D
0.8 M
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Solution

The correct option is A 1.2 M
Given: M1=2 M; V1=6 L and
V2=(4+6) L=10 L
As per the concept of dilution,
M1V1=M2V2
(2×6)=M2×10
So, M2=1.2 M

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