Question

mass of a gas occupies 572 cm3 at 130 degree Celsius and 725 mm of Hg pressure. What will be its
volume at 240C and 792 mm Hg pressure?

Please answer

Answer 1

Answer:

Volume = 966.66666 cm³

Explanation:

From all the gas laws we get,

PV = nRT

P = $\dfrac{nRT}{V}$

Therefore,

P ∝ $\dfrac{T}{V}$

or

$\dfrac{PV}{T}$ = constant

Using the above eqution we get,

$\dfrac{P_1V_1}{T_1}= \dfrac{P_2V_2}{T_2}$

From the question we get,

P₁ = 725 mm Hg                       P₂ = 792 mm Hg

V₁ = 572 cm³                            V₂ = ?

T₁ = 130° C                                T₂ = 240° C

Substituting all theses values we get,

$\dfrac{725 \times 572}{130} =\dfrac{792 \times V_2}{240}$

$\dfrac{725 \times 572 \times 240}{130 \times 792} =V_2$

$V_2 = 966. \bar6$