Question

If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant?

Answer 1

Answer:

B. It increases.

Explanation:

• We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

It is clear that, at constant P, the volume of the gas (V) is directly proportional to the temperature of the gas.

V ∝ T.

So, If a balloon is heated, the volume of the air in the balloon if the pressure is constant:

B. It increases.