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25 mL of 3.0 HCl are mixed with 75 mL of...

25 mL of 3.0 HCl are mixed with 75 mL of 4.0 M HCl. If the volumes are additive, the molarity of the final mixture will be :

A

4.0 M

B

3.75 M

C

4.25 M

D

3.50 M

Text Solution

Verified by Experts

The correct Answer is:
B
Since the two solutions containing the same solute (HCl) are mixed, the resultant molarity of the solution can be calculated as :
`M=(M_(1)V_(1)+M_(2)V_(2))/((V_(1)+V_(2)))`
`=((3xx25)+(4xx75))/((25+75))=3.75M`
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