AP EAPCET 07-Jul-2022 Shift 1 Paper

Mass by mass percentage is the mass of solute dissolved in 100g of the solution.
Mass of solution =100g
Mass of glucose =10g
Mass of solvent =90g
Molar mass of glucose (C6H12O6)
=12×6+1×12+16×6=180g∕mol
Morality=

Mass‌of‌solute

Molar‌mass‌of‌solute

×

100

Mass‌of‌solvent(in‌g)

=

10

180

×

1000

90

=0.617m
Also, Volume of solution =

Mass‌of‌solution

Density‌of‌solution

Molarity=

Mass‌of‌solute×1000

Molar‌mass‌of‌solute×Volume‌of‌solution(in‌m‌l)

=

100g

1.2g∕ml

=83.33ml
∴Morality=

10

180

×

1000

83.33

=0.67M