Explain starch and buffer and the total volume was made up

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Reference no: EM13229538

In the reaction between H2O2 and I^-, 15 ml of 0.30 M KI, 68 ml of 0.10 M H2O2and 19 ml 0.020 M Na2S2O3 were mixed in a flask containing starch and buffer and the total volume was made up to 500 ml with distilled water. The solution turned blue 9 indicating the presence of I2) in 1.8 minutes. Calculate the initial rate of disappearance of H2O2 in units of M min^-1 to two significant figures.

Reference no: EM13229538

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