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NCERT Class XII Chemistry
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Question : 13
Total: 53
The partial pressure of ethane over a saturated solution containing 6.56×10‌–3 g of ethane is 1 bar. If the solution contains 5.00 × 10‌−2 g of ethane, then what shall be the partial pressure of the gas?
Solution:  
Applying the relationship, m=KH×p
In thefirst case, 6.56×10−3 g=K H×1 bar or KH=6.56×10−3 g bar−1
In the second case, 5.00×10−2 g =(6.56×10−3g bar−1 )×p or, p=
5.00×10−2 g
6.56×10−3gbar−1
=7.62‌bar
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