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What would be the molality of 20 (mass/mass) aqueous solution of Kl? (molar mass of Kl=166 g

(a)

1.48

(b)

1.51

(c)

1.08

(d)

1.35


Question ID - 52621 :-

What would be the molality of 20 (mass/mass) aqueous solution of Kl? (molar mass of Kl=166 g

(a)

1.48

(b)

1.51

(c)

1.08

(d)

1.35

1 Answer
5876 Votes
3537

Answer Key : (b) -

20% W/W KI solution

i.e.  100 g solution contains 20 g KI

∴  Mass of solvent =100−20=80 g

∴  Molality=

                     =1.51 molar



Next Question :

A man turns on a rotating table with an angular speed . He is holding two equal masses at arm’s length. Without moving his arms, he just drops the two masses. How will his angular speed change

a)

It will be less than

b)

It will be more than

c)

It will remain equal to

d)

May be less than, greater than or equal to  depending on the quantity of masses


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