Question

The resultant molarity of solution made by mixing 600 mL of 2 M NaOH solution and 400 mL of 3M NaOH solution is
(1) 1 M
(2) 1.2 M
(3)2.4 M
(4) 3.6 M​

Answer 1

Answer:

(3) 2.4M

Explanation:

the rule is M1V1+M2V2=MV

where M1=2;M2=3;M= the resulting molarity

V1=600ml;V2=400ml;V=total volume

according to this

(2×600)+(3×400)=M×(600+400)

by solving we get 2.4

so the resultant molarity will be 2.4