The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 mL of 2 M HCl will be

Options

A. 0.975 M
B. 0.875 M
C. 1.00 M
D. 1.75 M

Answer

B

Explanation

`M_(1)V_(1) + M_(2)V_(2) = M_("mix")(V_(1) + V_(2))`
`0.5 xx 750 +2 xx 250 = M_("mix")(1000)`
`M_("mix") = (0.5 xx 750 + 2 xx 250)/1000`
`=(375 + 500)/1000 = 0.875` M