Question

How many grams ofNaOH should be dissolved in water and the solution made to 100cm cube in volumetric flask What is the morality of the resulting solution

Answer 1

Answer:

Amount of NaOH = 2.46 g

Volume of solution =100cm

3

Moles of NaOH =

Molarmass

MassofNaOH

=

40gmol

−1

2.46g

=0.0615mol.

Molarity =

Volumeofsolution

MolesofNaOH

×1000

=

100mL

0.0615mol

×1000mLL

−1

=0.615molL

−1

=0.615molL

−1

or =0.615M