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Chemistry
Chemistry
Problem
A 1.10 g sample of copper ore is dissolved and
Cu
2
+
\text{Cu}^{2+}
Cu
2
+
formed are titrated with excess of KI. The liberated iodine requires
12.12
mL
12.12 \text{ mL}
12.12
mL
of
0.10
N
0.10 \text{ N}
0.10
N
Na
2
S
2
O
3
\text{Na}_2\text{S}_2\text{O}_3
Na
2
S
2
O
3
solution for titration. The % of copper by mass in sample is .....
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