Question

A sample neon gas has its volume tripled and its temperature held constant. What will be the new pressure relative to the initial pressure

Answer 1

Correct answer: p₂ : p₁ = 1 : 3

Step-by-step explanation:

A process that occurs at a constant temperature is called an isothermal process and the formula that applies to this process is:

p · V = const where p is pressure and V is volume

Given : V₂ = 3 V₁

p₁ V₁ = p₂ V₂ ⇒ p₂ / p₁ = V₁ / V₂ ⇒ p₂ / p₁ = V₁ / 3 V₁ ⇒ p₂ / p₁ = 1 / 3

p₂ : p₁ = 1 : 3

which means that when the volume is increased three times the pressure is reduced three times

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