Odisha Board Solutions for Chapter: Basic Concepts Atoms & Molecules, Exercise 1: QUESTIONS

State Gay-Lussac’s law of gaseous volumes and give two examples of the reactions which illustrate the law.

How much silver nitrate would be required to react with $1.16 \mathrm{gms}$ sodium chloride to produce $1.70 \mathrm{gms}$ sodium nitrate and $2.87 \mathrm{gms}$ silver chloride? Which law of chemical combinations holds good in this case? [Hint: $\mathrm{mass} \mathrm{of} {\mathrm{AgNO}}_3 + \mathrm{mass} \mathrm{of} \mathrm{NaCl} = \mathrm{mass} \mathrm{of} \mathrm{AgCl} + \mathrm{mass} \mathrm{of} {\mathrm{NaNO}}_3$]

The weight of copper oxide obtained by treating $2.16 \mathrm{g}$ metallic copper with nitric acid and subsequent ignition was $2.7$. In another experiment, $1.15\mathrm{g}$ of copper oxide on the reduction produced $0.92\mathrm{g}$ of copper. Show that these results illustrate the law of constant proportions.

In an experiment $0.6\mathrm{g}$ of carbon when heated with excess of oxygen produced $1.12$ litres of carbon monoxide at NTP. In another experiment, $2.24 \mathrm{litres}$ of carbon dioxide upon reduction with $1.2\mathrm{g}$ of carbon produced 4.48 litres of carbon monoxide at NTP. Show that the results illustrate the law of definite proportions.

Carbon and oxygen are known to form two compounds, The carbon content in one of these is $42.9\%$ while in the other is $27.3\%$. Show that the data are in agreement with the law of multiple proportions.

Three oxides of a metal M are found to contain $24.26, 29.95, \mathrm{and} 49.95$ percent of oxygen. Show that these results are in agreement with law of multiple proportions.

Phosphorus chloride contains $22.57\%$ phosphorus, phosphine contains $8.82\%$ hydrogen, and hydrogen chloride contains $97.23\%$ chlorine. Show that these figures agree with the law of reciprocal proportions.

$\mathrm{KI}$ contains $23.6\%$ potassium. $\mathrm{KCl}$ contains$52\%$ potassium. $\mathrm{ICl}$ contains $77.8\%$ iodine. Show that these data are in agreement with law of reciprocal proportions.