To make a saturated solution, 36 gm of sodium chloride is dissolved in 100 gm of water at 293 K. Find its concentration at this temperature.

Effects of Temperature

• The solubility increases with the increase in temperature
• The solubility decreases with a decrease in temperature

Steps to Calculate the Concentration at Temperature

Step I: Determine the total mass of the solution:

water mass (H2O as solvent) = 100 gm

sodium chloride mass (NaCl as solute) = 36 gm

solution mass = 36 + 100 = 136 gm

Step II: Determine the concentration:

Concentration = (mass of a solute/ mass of a solution) x 100

= 36/136 x 100

= 26.47%

Uses of sodium chloride

• It is widely used in the food industry as a preservative and flavor enhancer.
• It is an important raw material in the industrial production of various chemicals such as sodium carbonate, sodium bicarbonate.
• This salt is used in the manufacture of glass.
• Used in cold countries to protect roads, bridges, etc. from freezing. This is important for safe driving conditions.

Summary:

To make a saturated solution, 36 gm of sodium chloride is dissolved in 100 gm of water at 293 K. Find its concentration at this temperature.

To prepare a saturated solution, 36 gm of sodium chloride has to be dissolved in 100 gm of water at a temperature of 293 K. The concentration is 26.47% at this temperature.