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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: 0.5g KCl was dissolved in 100g water and the solution originally .........
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[Post New]21 Feb 2008 23:20:08 IST
    Subject: 0.5g KCl was dissolved in 100g water and the solution originally .........
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sneha.bagri (142)

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 0.5g KCl was dissolved in 100g water and the solution originally at 200C, froze at  
-0.240C. Calculate the percentage ionization of salt. Kf per 1000g of water = 1.86K.
 
    
[Post New]21 Feb 2008 23:30:11 IST
    Subject: 0.5g KCl was dissolved in 100g water and the solution originally .........
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rockey (168)

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delta Tf =Kf molality

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[Post New]22 Feb 2008 08:57:46 IST
    Subject: 0.5g KCl was dissolved in 100g water and the solution originally .........
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sneha.bagri (142)

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here we need to consider vant hoff factor me not getting d ans....
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[Post New]22 Feb 2008 11:23:23 IST
    Subject: 0.5g KCl was dissolved in 100g water and the solution originally .........
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sneha.bagri (142)

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hey frnds dis is cbse modle paper ques so plz try dis.........
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[Post New]22 Feb 2008 11:28:34 IST
    Subject: 0.5g KCl was dissolved in 100g water and the solution originally .........
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avi_1214545 (974)

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is it .92?
Na pine ka shouk tha na pilane ka shonk tha. Hume to sirf NAZREIN milane ka shonk tha. Par kya karen hum nazre hi unse mila baithe jinhe nazron se PILANE ka shonk tha.
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[Post New]22 Feb 2008 11:40:10 IST
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dheeraj89 (0)

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^T= imK
.24= [1+(n-1)@] * .067 * 1.86  
[Here n=2 bcoz 2 ions & @= degree of ionisation]
after solving,
@=.9225  or 92.25%
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[Post New]22 Feb 2008 12:10:31 IST
    Subject: Re:0.5g KCl was dissolved in 100g water and the solution originally .........
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ashish_banga (1016)

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delta Tf = i Kf X m
m = 0.5 X 10 / 74.5
get i and use 1 + x = i
x = degree of dissociation
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