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MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryMole _ Equivalent ConceptEquivalent Weight & Equivalent Concept

10  mL  of  0.2  N  HCl  and  30  mL  of  0.1  N  HCl together  exactly  neutralises  40  mL  of  solution  of NaOH,  which  is  also  exactly  neutralised  by  a solution in water of 0.61 g of an organic acid.What is the equivalent weight of the organic acid ?

A.alkaline
B.neutral✓ Correct
C.acidic
D.none of these
Explanation

Number of millimoles of 1 100 100 NaOH x ∴ Number of milliequivalent of  NaOH =millimoles  × valency factor =100 1 100 x ∴Number of milliequivalent of 2 4 10 10 100 H SO x Number of milliequivalent of  NaOH=Number of milliequivalent of 2 4 H SO The resultant solution will be neutral.

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