Equilibrium Question 451

Question: How many millilitres of 6.0M hydrochloric acid should be used to prepare 150ml of a solution which is 0.30M in hydrogen ion [Pb. PMT 1998]

Options:

A) 3.0

B) 7.5

C) 9.3

D) 30

Show Answer

Answer:

Correct Answer: B

Solution:

M1=6.0 M of HCl ; V1=?

M2 =0.30 M is H+ concentration in solution. V2= 150 ml of solution.

M1V1=M2V2 ; 6.0×V1=.30×150

V1=.30×1506=7.5 ml.



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