Question
The amount of glucose required to prepare 250 mL of M 20 aquepus solution is : (Molar mass of glucose : 180 ~g ~mol ^ -1 )
The amount of glucose required to prepare 250 mL of M 20 aquepus solution is : (Molar mass of glucose : 180 ~g ~mol ^ -1 )
A. 2.25 g
Molarity, M = w _2 1000 M _2 ( V ) w _2= Amount of glucose Given molarity = M 20 1 20 = w_2 1000 180 250 w_2= 180 250 20 1000 =2.25 ~g
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