Question

The density of a solution containing 40% by mass of HCl is 0.0365 g/cc . Calculate the normality of the solution.

Answer 1

Answer:

Molarity =

volume(inmL)

moles

×1000

40% by mass of HCl means 100g solution contains 40g HCl.

Number of moles of HCl=

molecular mass of HCl

weight

=

36.5

40

=1.0958 moles

Density=

volume

mass

=1.2 g/mL

Volume=

1.2

100

=83.33 mL

Therefore, Molarity =

83.33

1.0958

• ×1000 = 13.15 M

Answer 2

Answer:

please see the pictures

here is your answer