2.5 litre of 1M NaOH solution is mixed w...

2.5 litre of 1M NaOH solution is mixed with a 3.0 litres of 0.5 M NaOH solution. The molarity of the resulting solution is :

A

0.80 M

B

1.0 M

C

0.73 M

D

0.50 M.

Verified by Experts

The correct Answer is:

c

`M_(1)V_(1)+M_(2)V_(2)=M_(3)(V_(1)+V_(2))`
`M_(3)=(M_(1)V_(1)+M_(2)V_(2))/((V_(1)+V_(2)))`
`M_(3)=(1xx2.5+0.5xx3)/(2.5+3)`
`(4.0)/(5.5)=0.73M`

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