If 2 moles of Na2Co3 dissolved in 8 moles of water , mole fraction of water is ( )
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Answer: will u be my friend
Explanation:12 molal solution means 12 moles of sodium carbonate in 1 kg of water.
The number of moles of sodium carbonate, n
Na
2
CO
3
=12.
The number of moles of water, n
H
2
O
=
18
1000
=55.55.
The mole fraction of sodium carbonate, X
Na
2
CO
3
=
12+55.55
12
=0.177.
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