the concetration of HCl in a commercial concetrated HCl solution is given as 37%(W/W). calculate the molarity., normality of HCl in the solution . prepare 100.ml of 1N solution of HCl

Answer 1

the concetration of HCl in a commercial concetrated HCl solution is given as 37%(W/W). calculate the molarity

Answer 2

from the weight concentration.
37gHCl/(37gHCl+63gH2O)

molality=(37/36.5)/.063=16.1

Molarity=(37/36.5)/.1=10.1=Normality

prepare 100ml 1N
ok, you want to dilute it 10.1 times, which means one part conc acid, and 9.1 parts water

1part=10.1ml acid
9 parts=90.9ml water

so add the acid to water (Always add acid to water, slowly, stirring, under a hood).

Answer 3

I think this is a flawed problem. The density isn't given and without that one doesn't know the volume of the solution; therefore I don't think an accurate molarity can be calculated. A 37% solution of HCl has a molarity of very close to 12 M and the density is about (from memory) 1.19 g/mL.
1.19 g/mL x 1000 mL x 0.37 x (11/36.5) = 12 M