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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.A. Molality `=4/3` mB. `% w/w=34/15.34`C. `% w/v= 3.4%`D. mole fraction of `NH_(3) =3/128` |
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Answer» Correct Answer - ABcD 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` |
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