Concept explainers
(a)
Interpretation:
The precipitation reaction should be given from given process and formula of the precipitate should be given.
Concept introduction:
Precipitation reaction:
- The precipitate is formed, when the two solutions mixed together is called precipitation reaction and precipitate is a insoluble new product of reaction of two solutions.
Solubility guideline:
- Compound containing alkali metal cations and ammonium ion are soluble in water.
- Compound contains nitrate, acetate and chlorate ions are soluble in water.
- Except Ag+ , Hg2+ and pb2+ ions , compounds containing chloride, bromide and iodide ions are soluble in water.
- Except Ag+ , Hg2+, pb2+, Ca2+, Sr2+ and Ba2+ ions, compounds containing sulfate ion are soluble.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and NH4+ ions, compounds containing carbonate, phosphate, chromate and sulfite ions are insoluble in water.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and Ba2+ ions, compounds containing hydroxide ions are insoluble in water.
(a)

Answer to Problem 9.24QP
The water solubility of given compounds are,
Fe(OH)3(s) precipitate is formed.
Explanation of Solution
The balanced equation for reaction of FeCl3(aq) and LiOH(aq) is,
FeCl3(aq)+3LiOH(aq)→Fe(OH)3(s)↓+3LiCl(aq)
According to the solubility guideline, Fe(OH)3 is contains hydroxide ion so it is insoluble in water so it get precipitated.
(b)
Interpretation:
The precipitation reaction should be given from given process and formula of the precipitate should be given.
Concept introduction:
Precipitation reaction:
- The precipitate is formed, when the two solutions mixed together is called precipitation reaction and precipitate is a insoluble new product of reaction of two solutions.
Solubility guideline:
- Compound containing alkali metal cations and ammonium ion are soluble in water.
- Compound contains nitrate, acetate and chlorate ions are soluble in water.
- Except Ag+ , Hg2+ and pb2+ ions , compounds containing chloride, bromide and iodide ions are soluble in water.
- Except Ag+ , Hg2+, pb2+, Ca2+, Sr2+ and Ba2+ ions, compounds containing sulfate ion are soluble.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and NH4+ ions, compounds containing carbonate, phosphate, chromate and sulfite ions are insoluble in water.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and Ba2+ ions, compounds containing hydroxide ions are insoluble in water.
(b)

Answer to Problem 9.24QP
The water solubility of given compounds are,
It is not a precipitation reaction
Explanation of Solution
The balanced equation for reaction of KNO3(aq) and CaCl2(aq) is,
2KNO3(aq)+CaCl2(aq)→Ca(NO3)2(aq)+2KCl(aq)
According to the solubility guideline, Ca(NO3)2(aq) and 2KCl(aq) soluble in water there is no precipitation take place so not precipitated formed.
(c)
Interpretation:
The precipitation reaction should be given from given process and formula of the precipitate should be given.
Concept introduction:
Precipitation reaction:
- The precipitate is formed, when the two solutions mixed together is called precipitation reaction and precipitate is a insoluble new product of reaction of two solutions.
Solubility guideline:
- Compound containing alkali metal cations and ammonium ion are soluble in water.
- Compound contains nitrate, acetate and chlorate ions are soluble in water.
- Except Ag+ , Hg2+ and pb2+ ions , compounds containing chloride, bromide and iodide ions are soluble in water.
- Except Ag+ , Hg2+, pb2+, Ca2+, Sr2+ and Ba2+ ions, compounds containing sulfate ion are soluble.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and NH4+ ions, compounds containing carbonate, phosphate, chromate and sulfite ions are insoluble in water.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and Ba2+ ions, compounds containing hydroxide ions are insoluble in water.
(c)

Answer to Problem 9.24QP
The water solubility of given compounds are,
It is not a precipitation reaction
Explanation of Solution
The balanced equation for reaction of (NH4)2CO3(aq) and NaCO3(aq) is,
(NH4)2CO3(aq)+Na2CO3(aq)→(NH4)2CO3(aq)+Na2CO3(aq)
No reaction takes place so no new product formed.
(d)
Interpretation:
The precipitation reaction should be given from given process and formula of the precipitate should be given.
Concept introduction:
Precipitation reaction:
- The precipitate is formed, when the two solutions mixed together is called precipitation reaction and precipitate is a insoluble new product of reaction of two solutions.
Solubility guideline:
- Compound containing alkali metal cations and ammonium ion are soluble in water.
- Compound contains nitrate, acetate and chlorate ions are soluble in water.
- Except Ag+ , Hg2+ and pb2+ ions , compounds containing chloride, bromide and iodide ions are soluble in water.
- Except Ag+ , Hg2+, pb2+, Ca2+, Sr2+ and Ba2+ ions, compounds containing sulfate ion are soluble.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and NH4+ ions, compounds containing carbonate, phosphate, chromate and sulfite ions are insoluble in water.
- Except Li+ , Na+ , K+ , Rb+ , Cs+ and Ba2+ ions, compounds containing hydroxide ions are insoluble in water.
(d)

Answer to Problem 9.24QP
The water solubility of given compounds are,
Sr(OH)2(s) precipitate is formed.
Explanation of Solution
The balanced equation for reaction of Sr(NO3)2(aq) and Ca(OH)2(aq) is,
Sr(NO3)2(aq)+Ca(OH)2(aq)→Sr(OH)2(s)↓+Ca(NO3)2(aq)
According to the solubility guideline, Sr(OH)2(s) is contains hydroxide ion so it is insoluble in water so it get precipitated.
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Chapter 9 Solutions
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