Question

2.31 grams of KNO3 are dissolved in 4.15 g of H2O. What is the concentration of the solution in units of gKNO3/100gH2O?

Answer 1

Answer: The concentration of the solution is 55.66g$KNO_3$/100g$H_2O$

Explanation:

A solution consists of solute and solvent. A solute is defined as the component present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.

We are given:

Mass of $KNO_3$ = 2.31 g

Mass of water = 4.15 g

To calculate the concentration in g$KNO_3$/100 g $H_2O$, we apply unitary method:

In 4.15 g of water, the mass of $KNO_3$ present is 2.31 g

So, in 100 g of water, the mass of $KNO_3$ present will be $\frac{2.31}{4.15}\times 100=55.66g$

Hence, the concentration of the solution is 55.66g$KNO_3$/100g$H_2O$