Science Buddies: "Ask an Expert"

I am doing a school science project with Alka-seltzer at different temperatures of different liquids. I am using Coca-cola (cold), wine (cold), orange juice (cold), milk (cold), ice cold water (ice cold), and hot water (hot). I am trying to find out which will dissolve Alka-seltzer the fastest. I know it will be the hot water since the higher the temperature, the lower the dissolution time, but I'm not sure whether I should use any more hot liquids than just water. I am planning to use 1/2 cup of water per trial with 5 trials each liquid. Also, I was going to use 1/2 an Alka-seltzer tablet each trial. Please help me out!