EP BASIC CHEMISTRY-STANDALONE ACCESS
6th Edition
ISBN: 9780134999890
Author: Timberlake
Publisher: PEARSON CO
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Chapter 12.3, Problem 23PP
(a)
Interpretation Introduction
Interpretation: If the given ionic compound is soluble in water or not should be identified.
Concept Introduction: The solubility of ionic compounds is high in polar solvents such as water. This is because the ions present in it are strongly attracted to the molecules of the polar solvent. If there is any common ion in the ionic compound and the solvent, the solubility of ionic compound in that solvent decreases.
There are following rules of solubility of an ionic compound in the water:
- The salts of group 1 elements (alkali metals) are soluble. Also, salts of ammonium ion are soluble.
- The salts of nitrate ion are commonly soluble.
- The salts of chloride, bromide and iodide ions are commonly soluble. But halide salts of silver ion, lead ion and mercury ions are insoluble.
- Most of the silver salts are insoluble but silver nitrate and silver acetate are generally soluble.
- Most of the sulphate salts are soluble but calcium sulphate, barium sulphate, silver sulphate and strontium sulphate are insoluble.
- Most of the hydroxide salts are slightly soluble but that of group 1 elements are soluble. Hydroxide salts of
transition metals and aluminium ion are insoluble. Therefore, iron hydroxide, aluminium hydroxide and cobalt hydroxide are insoluble. - The sulphides of transition metals are strongly insoluble such as cadmium sulphide, iron sulphide, zinc sulphide and silver sulphide. The salts of arsenic, antimony, bismuth and lead are also insoluble.
- Carbonates are insoluble.
- Chromates are insoluble.
- Phosphates are also insoluble such as calcium phosphate and silver phosphate.
- Fluorides are also insoluble such as barium fluoride, magnesium fluoride and lead fluoride.
(b)
Interpretation Introduction
Interpretation: If the given ionic compound is soluble in water or not should be identified.
Concept Introduction: The solubility of ionic compounds is high in polar solvents such as water. This is because the ions present in it are strongly attracted to the molecules of the polar solvent. If there is any common ion in the ionic compound and the solvent, the solubility of ionic compound in that solvent decreases.
There are following rules of solubility of an ionic compound in the water:
- The salts of group 1 elements (alkali metals) are soluble. Also, salts of ammonium ion are soluble.
- The salts of nitrate ion are commonly soluble.
- The salts of chloride, bromide and iodide ions are commonly soluble. But halide salts of silver ion, lead ion and mercury ions are insoluble.
- Most of the silver salts are insoluble but silver nitrate and silver acetate are generally soluble.
- Most of the sulphate salts are soluble but calcium sulphate, barium sulphate, silver sulphate and strontium sulphate are insoluble.
- Most of the hydroxide salts are slightly soluble but that of group 1 elements are soluble. Hydroxide salts of transition metals and aluminium ion are insoluble. Therefore, iron hydroxide, aluminium hydroxide and cobalt hydroxide are insoluble.
- The sulphides of transition metals are strongly insoluble such as cadmium sulphide, iron sulphide, zinc sulphide and silver sulphide. The salts of arsenic, antimony, bismuth and lead are also insoluble.
- Carbonates are insoluble.
- Chromates are insoluble.
- Phosphates are also insoluble such as calcium phosphate and silver phosphate.
- Fluorides are also insoluble such as barium fluoride, magnesium fluoride and lead fluoride.
(c)
Interpretation Introduction
Interpretation: If the given ionic compound is soluble in water or not should be identified.
Concept Introduction: The solubility of ionic compounds is high in polar solvents such as water. This is because the ions present in it are strongly attracted to the molecules of the polar solvent. If there is any common ion in the ionic compound and the solvent, the solubility of ionic compound in that solvent decreases.
There are following rules of solubility of an ionic compound in the water:
- The salts of group 1 elements (alkali metals) are soluble. Also, salts of ammonium ion are soluble.
- The salts of nitrate ion are commonly soluble.
- The salts of chloride, bromide and iodide ions are commonly soluble. But halide salts of silver ion, lead ion and mercury ions are insoluble.
- Most of the silver salts are insoluble but silver nitrate and silver acetate are generally soluble.
- Most of the sulphate salts are soluble but calcium sulphate, barium sulphate, silver sulphate and strontium sulphate are insoluble.
- Most of the hydroxide salts are slightly soluble but that of group 1 elements are soluble. Hydroxide salts of transition metals and aluminium ion are insoluble. Therefore, iron hydroxide, aluminium hydroxide and cobalt hydroxide are insoluble.
- The sulphides of transition metals are strongly insoluble such as cadmium sulphide, iron sulphide, zinc sulphide and silver sulphide. The salts of arsenic, antimony, bismuth and lead are also insoluble.
- Carbonates are insoluble.
- Chromates are insoluble.
- Phosphates are also insoluble such as calcium phosphate and silver phosphate.
- Fluorides are also insoluble such as barium fluoride, magnesium fluoride and lead fluoride.
(d)
Interpretation Introduction
Interpretation: If the given ionic compound is soluble in water or not should be identified.
Concept Introduction: The solubility of ionic compounds is high in polar solvents such as water. This is because the ions present in it are strongly attracted to the molecules of the polar solvent. If there is any common ion in the ionic compound and the solvent, the solubility of ionic compound in that solvent decreases.
There are following rules of solubility of an ionic compound in the water:
- The salts of group 1 elements (alkali metals) are soluble. Also, salts of ammonium ion are soluble.
- The salts of nitrate ion are commonly soluble.
- The salts of chloride, bromide and iodide ions are commonly soluble. But halide salts of silver ion, lead ion and mercury ions are insoluble.
- Most of the silver salts are insoluble but silver nitrate and silver acetate are generally soluble.
- Most of the sulphate salts are soluble but calcium sulphate, barium sulphate, silver sulphate and strontium sulphate are insoluble.
- Most of the hydroxide salts are slightly soluble but that of group 1 elements are soluble. Hydroxide salts of transition metals and aluminium ion are insoluble. Therefore, iron hydroxide, aluminium hydroxide and cobalt hydroxide are insoluble.
- The sulphides of transition metals are strongly insoluble such as cadmium sulphide, iron sulphide, zinc sulphide and silver sulphide. The salts of arsenic, antimony, bismuth and lead are also insoluble.
- Carbonates are insoluble.
- Chromates are insoluble.
- Phosphates are also insoluble such as calcium phosphate and silver phosphate.
- Fluorides are also insoluble such as barium fluoride, magnesium fluoride and lead fluoride.
(e)
Interpretation Introduction
Interpretation: If the given ionic compound is soluble in water or not should be identified.
Concept Introduction: The solubility of ionic compounds is high in polar solvents such as water. This is because the ions present in it are strongly attracted to the molecules of the polar solvent. If there is any common ion in the ionic compound and the solvent, the solubility of ionic compound in that solvent decreases.
There are following rules of solubility of an ionic compound in the water:
- The salts of group 1 elements (alkali metals) are soluble. Also, salts of ammonium ion are soluble.
- The salts of nitrate ion are commonly soluble.
- The salts of chloride, bromide and iodide ions are commonly soluble. But halide salts of silver ion, lead ion and mercury ions are insoluble.
- Most of the silver salts are insoluble but silver nitrate and silver acetate are generally soluble.
- Most of the sulphate salts are soluble but calcium sulphate, barium sulphate, silver sulphate and strontium sulphate are insoluble.
- Most of the hydroxide salts are slightly soluble but that of group 1 elements are soluble. Hydroxide salts of transition metals and aluminium ion are insoluble. Therefore, iron hydroxide, aluminium hydroxide and cobalt hydroxide are insoluble.
- The sulphides of transition metals are strongly insoluble such as cadmium sulphide, iron sulphide, zinc sulphide and silver sulphide. The salts of arsenic, antimony, bismuth and lead are also insoluble.
- Carbonates are insoluble.
- Chromates are insoluble.
- Phosphates are also insoluble such as calcium phosphate and silver phosphate.
- Fluorides are also insoluble such as barium fluoride, magnesium fluoride and lead fluoride.
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3. Before proceeding with this problem you may want to glance at p. 466 of your textbook
where various oxo-phosphorus derivatives and their oxidation states are summarized.
Shown below are Latimer diagrams for phosphorus at pH values at 0 and 14:
-0.93
+0.38
-0.50
-0.51 -0.06
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Acidic solution
Basic solution
-0.28
-0.50
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-1.57
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PO HPO H₂PO₂ →P → PH3
-1.73
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H,PO
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Oxidation stale, N
Chapter 12 Solutions
EP BASIC CHEMISTRY-STANDALONE ACCESS
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