HARDMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryMole _ Equivalent ConceptAchiever Section

HCl is 80% ionised in 0.01 M aqueous solution. The equilibrium molarity of HCl in the solution is

A.0.002✓ Correct

B.0.06

C.0.02

D.0.008

Explanation

0.0 1 0.8 0.01(1 0.8 ) 0.01 0.8 0 0.01 0 H C l H C l x x → 0.002 HCl M Comprehension HNO₃ used as a reagent has specific gravity of 1.42g mL–1 and contains 70% by strength HNO₃.

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