Question

If 20 ml of 0.25N strong acid and 30 ml of 0.2 N of strong base are mixed, then the resulting solution is
A. 0.25 N basic
B. 0.2 N acidic
C. 0.25 N acidic
D. 0.2 N basic

Answer 1

Correct Answer - D
`V_(1)=20ml,N_(1)=0.25N,V_(2)=30ml,N_(2)=0.2N`
`thereforeN=(N_(1)V_(1)+N_(2)V_(2))/(V_(1)+V_(2))=(20(0.25)+30(0.2))/(20+30)`
`=(5+6)/(50)=(11)/(50)=0.2N` basic.