Correct Answer - a.1.5molkg-1
b.1.448M
c.0.0263
W2=20g,Wsol=100g
W1=100-20=80g
m=
W2×1000
Mw2×W1
=
20×1000
166×80
=1.5molKg-1
b.
Mw2
of Kl=39+127=166gmol-1
M+
%bymass×10×dsol
Mw2
=
20×10×1.202
166
=1.448M
c.
CHMi2=
n2
n1+n2
=
W2/Mw2
W1/Mw1+W2/Mw2
20/166
80/18+20/166
=
0.12
4.44+0.12
=
0.12
4.56
=0.0263