1. When you first opened the bottle of coke the pressure of gas in the coke (increased/decreased) and the dissolved gas( stays in/leaves) the coke. 2. When you placed the coke in hot water , the pressure of gas in the coke (increased/decreased) and the dissolved gas( stays in/leaves) the coke 3. Therefore to increase the solubility of a gas in a liquid ( that is to make a gas more soluble in a liquid.
