An aqueous solution of ammonia has molarity equal to 2 M. if density of the solution is 1.534 gm/ml then identify the options in which correct concentration terms are mentioned.

Options

A. Molality `=4/3` m
B. `% w/w=34/15.34`
C. `% w/v= 3.4%`
D. mole fraction of `NH_(3) =3/128`

Answer

ABcD

Explanation

2 moles of `NH_(3)` are present in 1000 ml of solution
`{:(n_(B)=2,,v_(s)=1000 ml),(w_(B)=34 gm,,W_(s)=1534 gm),(,,W_(A)=1500 gm):}`
`(A) m=2/1500 xx1000=4/3 m`
`(B) % w/w=34/1534xx100`
(C) `w/v % =34/100xx100 =3.4%`
(D) `x_(NH_(3)) =2/(2+1500/18) =2/85.55 =0.023`