Question

An alloy of gold and silver contains 38.5% silver by mass and has a density of 14.6gm/L.what is the molar concentration of silver in this alloy​

Answer 1

Explanation:

The density of alloy is 14.6 g/mL.

1000 mL of the alloy will weigh 14.6×1000=14600g

Out of this, 38.5 % by mass is silver.

Hence, the mass of silver present in 1000 mL of alloy is

100

38.5

×14600=5621g.

The molar mass of Ag is 108 g/mol.

Hence, the molar concentration of silver in the alloy is

108g/mol×1L

5621g

=52.04mol/L