Equation:
2Cu2+ + 2SO2-3 + 2I- 2 CuI + S4O2-6
Given: (During 3 trials)
1- [Na2S2O3] = 0.0206 M
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Trial 1 |
Trial 2 |
Trial 3 |
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Volume of Na2S2O3 used (ml) |
21.30 |
21.20 |
22.00 |
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Amount of Na2S2O3 used (mol) |
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Amount on Cu2+ in unknown sample (mol) |
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Volume of original Cu2+ solution used (mol) |
10 ml |
10 ml |
10 ml |
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[Cu2+] in original solution (M) |
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2- Average concentration of Cu2+ (M)? (Show all calculation in number 1 and 2)
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