Some Basic Concepts Of Chemistry Question 11

Question: To neutralize completely 20 mL of 0.l M aqueous solution of phosphorus ( H3PO3 ) acid the volume of 0.1 M aqueous KOH solution required is

Options:

A) 60 mL

B) 20 mL

C) 40 mL

D) 10 mL

Show Answer

Answer:

Correct Answer: C

Solution:

Meq. of H3PO3 = Meq. of KOH M1V1× Basicity = M2V2× Acidity 20×0.1×2=V×0.1×1
V=40 mL



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