(4) 22.4 litres of the solution
to
Calculate the mole percentage of CH OH and H,O respectively in 60% (by mass) aqueous solution of CH OH
(1) 45.8, 54.2
(2) 54.2, 45.8
(3) 50, 50
(4) 60, 40
02 SOLUBILITY
Answers
Answered by
1
Answer:
Given,
60% by mass solution of CH
3
OH. That means in 100gm solution
60gm CH
3
OH is dissolved in 40gm H
2
O
∴ Molar mass of CH
3
OH=32g/mol
Molar mass of H
2
O=18g/mol
⇒ No. of moles of CH
3
OH=
32g/mol
60gm
=1.875 mol ..........(1)
No. of moles of H
2
O=
18gm/mol
40gm
=2.222 mol ..........(2)
Total no. of moles=1.875+2.222=4.097 moles ..........(3)
⇒ Mole percentage=
Total no. of moles
Moles of compound
×100
Mole % of CH
3
OH=
4.097
1.875
×100
=45.8% (From 1 & 3)
Mole % of H
2
O=
4.097
2.222
×100
=54.23% (from 2,3)
Hence, the correct option is A
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