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Chapter 14: Problem 5
The number of phases of a mixture of four gases enclosed in a container are (a) 4 (b) 3 (c) 1 (d) 0
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A compound with an incongruent melting point decomposes on heating into (a) a liquid of the same composition as solid (b) a new solid phase and a solution with a composition different from that of the solid phase (c) a new solid phase and a solution with the same composition as that of the solid phase (d) a solution of fixed composition.
Lowest temperature is reached by using (a) \(\mathrm{CaCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\) (b) Acetone \(+\) dry ice (c) \(\mathrm{NH}_{4} \mathrm{Cl}\) (d) Ether + dry ice
The number of degrees of freedom for the system \(\mathrm{NH}_{4} \mathrm{Cl}(\mathrm{s}) \rightleftharpoons \mathrm{NH}_{4} \mathrm{Cl}(\mathrm{g}) \rightleftharpoons \mathrm{NH}_{3}(\mathrm{~g})+\mathrm{HCl}(\mathrm{g})\) is (a) 1 (b) 3 (c) 0 (d) 2
In terms of number of phases ( \(P\) ), components (C) and degrees of freedom (F), the phase rule is expressed as (a) \(P+C=F+2\) (b) \(F=P+C-2\) (c) \(P+F=C+2\) (d) \(P-F=C+2\)
In the phase diagram of a one-component system, which of the following statements is correct? (a) eutectic point (b) congruent point (c) triple point (d) critical point
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