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Write the statement for Charles’ law - Chemistry

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Write the statement for Charles’ law

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उत्तर

Statement for Charles’ law: At constant pressure, the volume of a fixed mass of a gas is directly proportional to its temperature in Kelvin.

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पाठ 10: States of Matter - Exercises [पृष्ठ १५८]

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बालभारती Chemistry [English] Standard 11 Maharashtra State Board
पाठ 10 States of Matter
Exercises | Q 3. (I)(b) | पृष्ठ १५८

संबंधित प्रश्‍न

Give reason for the following:

Gases have a lower density compared to solids or liquids.


What is meant by aqueous tension? How is the pressure exerted by a gas corrected to account for aqueous tension?


Convert the following temperature from degree Celcius to kelvin.

−15° C


Convert the following pressure value into Pascals.

10 atmosphere


Hot air balloons float in the air because of the low density of the air inside the balloon. Explain this with the help of an appropriate gas law.


Identify the gas laws from the following diagram.

Diagram Gas laws
______________

Match the pairs of the following:

Column ‘A’ Column ‘B’
a. Boyle’s law i. at constant pressure and volume
b. Charles’ law ii. at constant temperature
  iii. at constant pressure

With the help of the graph answer the following -

At constant temperature, the Graph shows the relationship between pressure and volume. Represent the relation mathematically.


With the help of the graph answer the following -

At constant temperature, Identify the law.


Solve the following.

A balloon is inflated with helium gas at room temperature of 25°C and at 1 bar pressure when its initial volume is 2.27L and allowed to rise in the air. As it rises in the air external pressure decreases and the volume of the gas increases till finally, it bursts when external pressure is 0.3bar. What is the limit at which the volume of the balloon can stay inflated?


Solve the following.

The volume of a given mass of a gas at 0°C is 2 dm3. Calculate the new volume of the gas at constant pressure when the temperature is decreased by 10°C.


Solve the following.

At 0°C, a gas occupies 22.4 liters. How much hot must be the gas in celsius and in kelvin to reach a volume of 25.0 liters?


The temperatures at which real gases obey the ideal gas laws over a wide range of pressure is called __________.


State Boyle's law.


Explain the following observation.

Aerated water bottles are kept under water during summer


Explain the following observation.

The size of a weather balloon becomes larger and larger as it ascends up to larger altitude


A sample of gas at 15°C at 1 atm. has a volume of 2.58 dm3. When the temperature is raised to 38°C at 1 atm does the volume of the gas Increase? If so, calculate the final volume.


A sample of gas has a volume of 8.5 dm3 at an unknown temperature. When the sample is submerged in ice water at 0°C, its volume gets reduced to 6.37 dm3. What is its initial temperature?


Of two samples of nitrogen gas, sample A contains 1.5 moles of nitrogen in a vessel of the volume of 37.6 dm3 at 298 K, and sample B is in a vessel of volume 16.5 dm3 at 298 K. Calculate the number of moles in sample B.


Sulphur hexafluoride is a colourless, odourless gas; calculate the pressure exerted by 1.82 moles of the gas in a steel vessel of volume 5.43 dm3 at 69.5 °C, assuming ideal gas behaviour


At 25°C and 1 atm, a cylinder containing 10 L of an ideal gas is connected to the empty cylinder with a capacity of 20 L. The pressures exerted by gas m both the cylinders will be ____________.


A certain mass of a gas occupies a volume of 2 dm3 at STP. At what temperature the volume of gas becomes double, keeping the pressure constant?


A gas occupies a volume of 4.2 dm3 at 101 kPa pressure. What volume will gas occupy if the pressure is increased to 235 kPa keeping the temperature constant?


At what temperature, the volume of gas would become zero?


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