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
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.
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.