Question

How does the molarity of a solution change when the temperature of the solution  changes from 350K to 300K?​

Answer 1

Answer:

As molarity is dependent on volume (mol/L) and volume rises as temperature does, molarity is inversely proportional to temperature. As temperature increases, volume also increases, which means that it will decrease the number of moles per litre. So, molarity decreases as the temperature increases.

Answer 2

Answer:

The molarity of a solution increases when the temperature of the solution  changes from 350 K to 300 K.

Explanation:

Molarity is defined as the number of moles of a solute dissolved per liter volume of the solution.

The formula is used to calculate the molarity:-

Molarity of the solution = Number of moles of solute/Volume of solution (in L)

We know that the number of moles of solute is calculated by dividing the mass of solute with its molar mass.

• Since the mass of the solute does not change with temperature, the number of moles are independent of temperature.
• But the volume of the solution can change with temperature. Therefore, at two different temperatures, the same solution will have different values of molarity.
• The direct relationship between temperature and volume is T ∝ V
• Molarity is inversely proportional to volume of solution: $M$∝ $\frac{1}{V}$
• When temperature of the solution decreases, volume also decreases and consequently molarity increases.

Therefore, as the temperature of solution decrease from 350K to 300K, the molarity of the solution increases.

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