250 ml of a sodium carbonate solution contains 2.65 grams of `Na_(2)CO_(3)`. If 10 ml of this solution is diluted to one litre,what is the concentration of the resultant solution? (mol.wt. of `Na_(2)CO_(3)=106`)

Options

A. `0.1 M`
B. `0.001 M`
C. `0.01 M`
D. `10.4M`

Answer

B

Explanation

Molaritt of solution `M _(1) = (2. 65)/(106) xx(1000)/(250) = 0.1 M`
`M _(1) V _(1) = M _(2) V _(2) , 0.1 xx 10 = M _(2) xx 1000 therefore M _(2) = (1)/(1000) = 0.001 M`