How many millilitree of `6.0` M hydrochloric acid should be used to prepare 150 ml of 0.30 M HCl solution ?

Options

A. `3.0`
B. 7.5
C. 9.3
D. 30

Answer

B

Explanation

`M_(1) = 6.0 M` of HCl , `V_(1) = ?`
`M_(2) = 0.30 M` is `H^(+)` concentration in solution.
`V_(2) = 150 ml` of solution.
`M_(1)V_(1) = M_(2)V_(2), 6.0 xx V_(1) = 0.30 xx 150`
`V_(1) = (0.30 xx 150)/(6) = 7.5 ml`.