Calculate

Asked by shekhar14351 | 28th Feb, 2010, 10:40: PM

Expert Answer:

M NaCl = 58.5

w NaCl = ?

ΔTf = 3

kf = 1.86

w1 = 1 kg

Since NACl is a stromg electrolyte which dissociates completely in water, i = 2

ΔTf = i .kf. w NaCl

           M NaCl . w1

3 = 2 x 1.86 x w2

        58.5 x 1

w2 = 47.18 g

 

 

Answered by  | 2nd Mar, 2010, 11:51: AM

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