100ml of 0.1M Ca(No3)2 solution is mixed with 100ml of 1M AgN03 find the molaritu of nitrate ion in the solution
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Answer:
Explanation:
Avogadro's number is 6.023×10
23
1.2×10
22
ions corresponds to
6.023×10
23
1.2×10
22
=0.02 moles.
100 mL of 0.1M solution of CoCl
3
.6H
2
O corresponds to
1000mL/L
100mL
×0.1M=0.01moles.
0.01 moles of CoCl
3
.6H
2
O reacts with excess AgNO
3
to form 0.02 moles of AgCl precipitate, which means 0.01 moles of Ag
+
and 0.01 moles of Cl
−
ions.
Thus, from one molecule of CoCl
3
.6H
2
O, one chlorine atom is displaced. Hence, the complex is
[Co(H
2
O)
5
Cl]Cl
2
.H
2
O as number of chloride ion outside co-ordination sphere should be one.
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