What experimental evidence supports that solubility increases with temperature in baking soda?

The solid never dissolved

More solid dissolved at higher temperatures in repeated trials

Baking soda was always chosen as the solute

Only cold water was tested

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Q1.

What generally happens to the solubility of most solutes as the temperature increases?

Q2.

At which temperature is more baking soda expected to dissolve in water?

Q3.

In the experiment with baking soda, what indicated the maximum solubility at 70 °C?

Q4.

What could be the effect if the temperature of water was decreased after heating?