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mass of Na2S2O3 is 1.220g titration of bleach with Na2S2O3 solution: trial 1: total volume used 66mL trial...

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Chemistry

mass of Na2S2O3 is 1.220g

titration of bleach with Na2S2O3 solution:

trial 1: total volume used 66mL

trial 2: total volume used 73.8mL

Density of Bleach 1.074 kg/L

a) find the moles of Na2S2O3 used to titrate the bleachsolution

b)find the moles of I2 formed by reaction with bleach

c) find the molarity of OCl- present in the bleach solution

d) find the grams of NaOCl present in the bleach

e) find the percent NaOCl present in the bleach

Answer & Explanation Solved by verified expert
4.0 Ratings (727 Votes)
a We know Number of moles given mass in g gram molar mass of substance given mass of Na2S2O3 1220 g gram molar mass of Na2S2O3 158 gmol therefore Number of moles of Na2S2O3 1220g 158 gmol 00077 mol Hence Number of moles of Na2S2O3 00077 mol    See Answer
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