Question

The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 mL of 2 M HCl will be
A. (a)0.875 M
B. (b)1.00 M
C. (c )1.75 M
D. (d)0.0975 M

Answer 1

Correct Answer - A
The molarity of a resulting solution is given by
`M=(M_(1)V_(1)+M_(2)V_(2))/(V_(1)+V_(2))`
`=(750xx0.5+250xx2)/(750+250)`
`=875/1000=0.875 M`