What is the amount of urea dissolved perlitre, if aqueous solution is isotonic with 10 % cane sugar solution? (Mol. wt. of urea =60 )

Question

What is the amount of urea dissolved perlitre, if aqueous solution is isotonic with 10 % cane sugar solution? (Mol. wt. of urea =60 ) (A) 200 g/lit (B) 19.2 g/lit (C) 17.54 g/lit (D) 16.7 g/lit

Tardigrade Admin · Accepted Answer

V1=1 litre and V2=100 m lit =0.1 litre (ω1/m1 V1)=(ω2/m2 V2) or (ω1/60 × 1)=(10/342 × 0.1) or ω1=17.54 g / L

Q. What is the amount of urea dissolved perlitre, if aqueous solution is isotonic with $10%$ cane sugar solution? (Mol. wt. of urea $= 60$ )

200 g/lit

19.2 g/lit

17.54 g/lit

16.7 g/lit

$V_{1} = 1$ litre and $V_{2} = 100 m$ lit $= 0.1$ litre
$\frac{ω _{1}}{m _{1} V _{1}} = \frac{ω _{2}}{m _{2} V _{2}}$
or $\frac{ω _{1}}{60 \times 1} = \frac{10}{342 \times 0.1}$
or $ω_{1} = 17.54 g / L$

Q. What is the amount of urea dissolved perlitre, if aqueous solution is isotonic with 10% cane sugar solution? (Mol. wt. of urea =60 )