Question

calculate the molarity of the water if it density is 100kgcm^3 ?​

Answer 1

Density of the Water = 1000 kg/m3

We know,

1 liter of water = 1 kg.

( Since, Density is 1000 kg/m 3

Thus, 1000 ml of water = 1 kg.

(Since, 1 liter = 1000 ml)

Now, Mass of Water = 1 kg.

= 1000 g.

The molecular mass of the water molecules = 18 grams.

Using the formula,

No.of moles =

molar mass

= 18

1000

=55.56moles

For the Molarity,

Using the Formula,

Molarity =

volume in ml

Number of moles

×1000

=

1000

55.56

×1000

=55.56M