How does the temperature affect the solubility of CO2 in water?
Generally, gasses are less soluble in water at higher temperatures. This is govern by the partial pressure that the gas in the liquid (in this case, water) exerts. We can simply say that as the temperature is increased, movements increase (due to kinetic effects) thus the rate of escaping of the gas molecules in the atmosphere increase. The result will be lesser moles of gas dissolved in the solvent (water).