Chemistry
State:
(a) Gay-Lussac's Law of combining volumes.
(b) Avogadro's law
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Answer
(a) Gay-Lussac's Law of combining volumes — When gases react, they do so in volumes which bear a simple ratio to one another, and to the volume of the gaseous product, provided that all the volumes are measured at the same temperature and pressure.
(b) Avogadro's law states that "equal volumes of all gases under similar conditions of temperature and pressure contain the same number of molecules."
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(b) Define atomicity of a gas. State the atomicity of Hydrogen, Phosphorus and Sulphur.
(c) Differentiate between N2 and 2N.
Explain Why?
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(b) "When stating the volume of a gas, the pressure and temperature should also be given."
(c) Inflating a balloon seems to violate Boyle's law.
Calculate the volume of oxygen at STP required for the complete combustion of 100 litres of carbon monoxide at the same temperature and pressure.
2CO + O2 ⟶ 2CO2
200 cm3 of hydrogen and 150 cm3 of oxygen are mixed and ignited, as per the following reaction,
2H2 + O2 ⟶ 2H2O
What volume of oxygen remains unreacted?