Question

For a given mass of a gas at constant pressure, the graph v-t ( t in Celsius scale) , intersect the temperature axis at

Answer 1

For a given mass of an ideal gas at constant pressure, the graph v-t(t in Celcius Scale) intersect the temperature axis at ...

Solution : at constant pressure,

Volume of gas is directly proportional to its temperature.

i.e., V ∝ T

But here you should notice that T is Kelvin scale.

For degree Celsius, T = t + 273.15°C

so, V = kT , where k is proportionality constant

⇒V = k(t + 273.15°C) , this is a straight line graph.

If y - axis denotes V and x - axis denotes t Then, at x - axis,  V = 0

0 = k(t + 273.15°C)

⇒t = -273.15°C

Therefore the graph v - t  intersects the temperature axis at - 273.15°C

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Answer 2

Answer:

at constant pressure,

Volume of gas is directly proportional to its temperature.

i.e., V ∝ T

But here you should notice that T is Kelvin scale.

For degree Celsius, T = t + 273.15°C

so, V = kT , where k is proportionality constant

⇒V = k(t + 273.15°C) , this is a straight line graph.

If y - axis denotes V and x - axis denotes t Then, at x - axis,  V = 0

0 = k(t + 273.15°C)

⇒t = -273.15°C

Therefore the graph v - t  intersects the temperature axis at - 273.15°C.