
Concept explainers
(a)
Interpretation:
The net ionic equation for the precipitation reaction in (a), if possible needs to be determined.
Concept Introduction : A precipitate is formed if two aqueous solutions are mixed to form an insoluble salt.
(a)

Answer to Problem 45A
No reaction occurs.
Explanation of Solution
Precipitation reaction does not occur between NaNO3 and Ru(NO3)2as both compounds are water-soluble and single anion (NO3-) present no displacement reaction occurs.
(b)
Interpretation:
The net ionic equation for the precipitation reaction in (b), if possible needs to be determined.
Concept Introduction : A precipitate is formed if two aqueous solutions are mixed to form an insoluble salt.
(b)

Answer to Problem 45A
The net ionic equation is
Explanation of Solution
When aqueous solution of CuSO4 is mixed with Na2S, CuS will precipitate after double displacement reaction or precipitation reaction.
The net ionic equation is represented as follows:
Here, CuS is insoluble in water.
(c)
Interpretation:
The net ionic equation for the precipitation reaction in (c), if possible needs to be determined.
Concept Introduction : A precipitate is formed if two aqueous solutions are mixed to form an insoluble salt.
(c)

Answer to Problem 45A
The net ionic reaction:
Explanation of Solution
When the aqueous solution of LiCl is mixed with an aqueous solution of Pb(NO3)2, PbCl2 will precipitate.
The net ionic reaction
Here, PbCl2 is insoluble in water.
(d)
Interpretation:
The net ionic equation for the precipitation reaction in (d), if possible needs to be determined.
Concept Introduction : A precipitate is formed if two aqueous solutions are mixed to form an insoluble salt.
(d)

Answer to Problem 45A
The net ionic reaction:
Explanation of Solution
When calcium nitrate and lithium carbonate solutions are mixed, a double displacement reaction is possible and the formation of calcium carbonate and lithium nitrate takes place. The lithium nitrate is soluble in water but calcium carbonate is not soluble thus, a precipitate is formed.
The net ionic reaction:
(e)
Interpretation:
The net ionic equation for the precipitation reaction in (e), if possible needs to be determined.
Concept Introduction : A precipitate is formed if two aqueous solutions are mixed to form an insoluble salt.
(e)

Answer to Problem 45A
Net ionic reaction :
Explanation of Solution
When an aqueous solution of gold (III) chloride and sodium hydroxide are mixed, a double displacement reaction takes place. This results in the formation of gold (III) hydroxide and sodium chloride. Here, sodium chloride is soluble in water but gold (III) hydroxide is not soluble thus, forms precipitate.
Net ionic reaction :
Chapter 8 Solutions
World of Chemistry, 3rd edition
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