MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryMole _ Equivalent ConceptStrength of Solution

The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 ml of 2 M HCl will be

A.0.875 M✓ Correct

B.1.00 M

C.1.75 M

D.0.0975 M

Explanation

The total molarity of the solution on mixing is obtained by adding the number of solute and volume as follows: 750 ml of 0.5 M solution has- 0.375 moles 250 ml of 2 M solution has- 0.5 moles Total moles= 0.375+0.5=0.875 Total volume= 1000ml= 1lt. Therefore, molarity= 0.875/1= 0.875 M.

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