what wil be the molarity if it increases from 20 c to 100 c?

To calculate the molarity at different temperatures, we need to consider the volume of the solution and the concentration of the solute at each temperature.

Molarity (M) is defined as the moles of solute divided by the volume of the solution in liters.

If the volume of the solution remains constant, the molarity will not change with temperature. However, if there is a change in volume, we need to take into account the change in concentration.

To find the molarity at different temperatures, we need to know the initial concentration and the volume of the solution at each temperature.

Assuming the volume remains constant, we can use the formula:
M1V1 = M2V2

Where:
M1 = initial molarity
V1 = initial volume
M2 = final molarity
V2 = final volume

Since the volume is constant, V1 = V2. Therefore, the equation becomes:
M1 = M2

This means that the molarity does not change with temperature if the volume is constant.

So, if the volume remains the same, the molarity will be unchanged at 20°C and 100°C.