# Reaction Rate Experiment - Concentration

by firebirds0707
Tags: concentration, experiment, rate, reaction
 P: 4 Solution A: is a dilute soultion of potassium iodate, KIO3 which is the source of iodate, IO2(1-) Solution B: contains some starch and the other reacting species, the hydrogen sulfite ion, HSO3(1-) 1. In a small beaker obtain about 50mL of solution A (0.02 M IO3(-)) and in another small beaker obtain about 70mL of soulition B (HSO3(-)) Trial - Contents of Test tube 1 - Contents of Test Tube 2 - Time (s) - Concentraion IO3(-) 1 10.0mL A + 0mL water 10.0 mL B 6.9 (my guess 0.02) 2 9.0 mL A + 1mL water 10.0 mL B 8.5 (my guess 0.018) 3 8.0 mL A + 2mL water 10.0mL B 9.1 (my guess 0.016) - My question is, am I getting the concentration right? I don't think I am and I am not sure how to figure it out. My friend with the same lab results said he got: 1. 0.01 2. 0.09 3. 0.08 so basiclaly what I got divide by 2 Please help me out thxx
 Admin P: 21,727 There is nothing to guess here - concentration can be calculated. And obviously your friend is better in these calculations

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