Question

What will be the molarity of a solution of glucose in water which is 10 % w/W

• A. 0.01 m
• B. 0.617 m
• C.
• D. $1.623 m$

Answer 1

Answer: (B)

0.617 m

Answer 2

Mass of solution = 100 g

Mass of glucose = 10 g mass of water = 90 g

No. of moles of glucose $= \frac { 10 } { 180 } = 0.0555 \mathrm {~mol}$

No. of moles of water $= \frac { 90 } { 18 } = 5 \mathrm {~mol}$

Molality