मराठी
MAH-MHT CET (PCM/PCB)
MCQ ऑनलाइन सराव परीक्षा५१
संकल्पना स्पष्टीकरण७४१
अभ्यासक्रम

Gay-Lussac's Law

Advertisements

Topics

Estimated time: 7 minutes
  • Definition: Limiting Reagent or Limiting Reactant
  • Law: Gay-Lussac's Law of Combining Volumes
CISCE: Class 10

Definition: Limiting Reagent or Limiting Reactant

The reactant which is completely used up in a reaction is known as Limiting reagent or Limiting reactant.

CISCE: Class 10

Law: 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.

Maharashtra State Board: Class 11, 12

Law: Gay-Lussac's Law

Gay-Lussac's Law (Pressure–Temperature Relationship):

At constant volume (V) and number of moles (n), pressure is directly proportional to absolute temperature.

\[P\propto T\quad\Rightarrow\quad\frac{P_1}{T_1}=\frac{P_2}{T_2}\]

or

Statement:

The pressure of a fixed mass of gas is directly proportional to its absolute temperature if volume is kept constant.

Mathematically, P ∝ T ⇒ \[\frac {P}{T}\] = constant

This means: heating a gas in a sealed (rigid) container increases its pressure.

Graph: P vs T (Isochore)

Gay-Lussac's Law P vs T graph showing straight line
P vs T graph at constant volume — a straight line through the origin (Kelvin scale).

Related QuestionsVIEW ALL [26]

A mixture of hydrogen and chlorine occupying 36 cm3 was exploded. On shaking it with water, 4 cm3 of hydrogen was left behind. Find the composition of the mixture.

The reaction 4N2O + CH4 → CO2 + 2H2O + 4N2 takes place in the gaseous state. If the volumes of all the gases are measured at the same temperature, and pressure, calculate the volume of dinitrogen oxide (N2O), required to give 150cm3 of steam.

If 6 liters of hydrogen and 4 liters of chlorine are mixed and exploded and if water is added to the gases formed, find the volume of the residual gas.

112 cm3 of H2S(g) is mixed with 120 cm3 of Cl2(g) at STP to produce HCl(g) and sulphur(s). Calculate the volume of gaseous product formed.

200 cm3 of CO2 is collected at STP when a mixture of acetylene and oxygen is ignited. Calculate the volume of acetylene and oxygen at STP. in original mixture.

\[\ce{2C2H2_{(g)} + 5O2_{(g)} → 4CO2_{(g)} + 2H2O_{(g)}}\]

The reaction: \[\ce{4N2O + CH4 -> CO2 + 2H2O + 4N2}\] takes place in the gaseous state. If all volumes are measured at the same temperature and pressure, calculate the volume of dinitrogen oxide (N2O) required to give 150 cm3 of steam.

What volume of air (containing 20% O2 by volume) will be required to burn completely 10 cm3 of methane and acetylene?

\[\ce{CH4 + 2O2 → CO2 + 2H2O}\]

\[\ce{2C2H2 + 5O2 -> 4CO2 + 2H2O}\]

What volume of oxygen would be required to burn completely 400 ml of acetylene [C2H2]? Also calculate the volume of carbon dioxide formed.

\[\ce{2C2H2 + 5H2O -> 4CO2 + 2H2O(l)}\]

Advertisements
Share
Notifications

Englishहिंदीमराठी
Login
Create free account


      Forgot password?
Course
Use app×