Question

Nitrogen combines with hydrogen to form ammonia (NH3). Illustrate Gay Lussac’s law using this example.

Answer 1

Answer:

Gay-Lusac's Law of Combining Gas Volumes states that:

<>The volume of gases taking part in a chemical reaction show simple whole number ratios to one another when those volumes are measured at the same temperature and pressure.

•When gas A reacts with gas B to produce gas C at constant temperature and pressure, then the ratio of the gas volumes will be a simple whole number ratio:

<>For gaseous reaction at constant temperature and pressure

volume of Gas A : volume of Gas B : volume of Gas C

x : y : z

where x, y and z are all whole numbers

<>For a reaction in which all the reactants and products are gases:

aA(g) + bB(g) → cC(g)

The ratio of the volumes of gasses A, B and C is a:b:c

<>For a reaction in which one of more of the reactants and/or products are NOT gases, then ONLY the volume of gases will be in a simple whole number ratio.

Answer 2

$N_{2}+ H_{2}$→$NH_{3}$  is the reaction to form Ammonia.

Gay Lussac’s Law of Combining Volumes states that

"when gases react, they do so in volumes which bear a simple ratio to one another, and to the volume of the product(s) formed if gaseous, provided the temperature and pressure remain constant".

The ratio of the gas volumes will be a straightforward whole number ratio when gas A combines with gas B to form gas C at constant temperature and pressure:

at constant pressure and temperature for gaseous reaction gas A volume, gas B volume, and gas c volume x: y: z

x, y, and z are all whole numbers in this scenario.

Here with respect to formation of ammonia

The volume ratios of N2, H2, and NH3 in the reaction $N_{2}+ H_{2}$→$NH_{3}$ are 1:3:2. This provides an example of Gay Lussac's law of combining gas volumes, sometimes known as the law of gaseous volumes.

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