Concept explainers
(a)
Interpretation:
The correct formula of ammonium dichromate, ammonium nitrate and trinitrotoluene has to be written.
(a)
Explanation of Solution
(i)Ammonium dichromate contains the ammonium cation,
(ii)Ammonium nitrate contains the ammonium cation,
(iii)Trinitrotoluene contains seven carbon atoms, five hydrogen atoms, three nitrogen atoms and six oxygen atoms, so its formula is
(b)
Interpretation:
Among the three compounds given, the compound which has the highest mass percent nitrogen has to be determined.
(b)
Explanation of Solution
(i)Ammonium dichromate:
Formula is.
One mole of
Molar mass of
Mass of
(ii)Ammonium nitrate:
Formula is
One mole of
Molar mass of
Mass of
(iii)Trinitrotoluene:
Formula is
One mole of
Molar mass of
Mass of
(c)
Interpretation:
Among the three compounds, the compound which has the lowest melting point has to be explained.
(c)
Explanation of Solution
Molecular compounds have lower melting points than ionic compounds.
(d)
Interpretation:
Among the three compounds, the compound which conduct electricity at room temperature has to be explained.
(d)
Explanation of Solution
(e)
Interpretation:
Among the three compounds, the compound which conducts electricity if they melted has to be given.
(e)
Explanation of Solution
If the temperature of the ionic compounds increased, then the ions will melt and in that molten state would electricity. So
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Chapter 2 Solutions
Chemistry: The Molecular Science
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