Question

2. What volume of 0.15 Molar HCI can be made from 7.5 ml. of concentrated HCI(12Molar)?
(A) 0.060 1.
(3) 0 60 1.
(C) 6.0L
(D) 6.0 x 10²​

Answer 1

Answer:

0.6L

Explanation:

let the no of moles of HCl in 7.5mL of 12M solution be 'n'

M=n/V

n=M x V= 12mol/L x 0.0075L= 0.09 moles

As Only water is added and not HCl to prepare the solution, the number of moles of HCl will remain constant.

Thus, M=n/V

0.15=0.09/V

V=0.09/0.15=0.6L=600mL

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