Question

Two solutions of a substance (non-electroyte) are mixed in the following manner `480 mL` of `1.5M` of first solution with `520 mL or 1.2M` of second solution. The molarity of final solution is:
A. (a)1.20 M
B. (b)1.50 M
C. (c )1.344 M
D. (d)2.70 M

Answer 1

Correct Answer - C
For I mM=`480xx1.5=720`
For II mM=`520xx1.2=624`
Total millimoles`=720+624=1344`
`:. M=1344/(480+520)=1.344 M`