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CBSE Class 11-science Answered

Calculate
Asked by shekhar14351 | 28 Feb, 2010, 10:40: PM
answered-by-expert 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 | 02 Mar, 2010, 11:51: AM
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