(20 13? Cong Cong, who loves to explore, did a small family experiment: insert a long piece into the bottle cap of a drink bottle containing some Sprite (carbonated drinks)

(1) Carbonic acid in Sprite beverage is easy to decompose when heated; Sodium hydroxide dissolves in water to release a lot of heat, which decomposes carbonic acid in Sprite beverage to produce carbon dioxide gas, so the clarified lime water becomes turbid;

(2) Experiments show that when sodium hydroxide is dissolved in water, it releases a lot of heat, and the solubility of CO2 decreases with the increase of temperature.

So the answer is: (1) Clear limewater becomes turbid; Carbon dioxide+calcium hydroxide = calcium carbonate ↓+H2O

(2) release; Increase and decrease