Question

Numericals
(16 mL)
1. A sample of a gas occupies 20 mL at 720 mmHg pressure. What volume will the same gas sample occupy at a
pressure of 900 mm of Hg? Assume that the temperature remains constant.
will it occupy 4 L, at the same temperature?​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

The final volume of the gas, V₂, calculated is $16ml$.

Explanation:

Given,

The gas's initial volume, V₁ = $20ml$

The gas's initial pressure, P₁ = $720mmHg$

The gas's final pressure, P₂ = $900mmHg$

The temperature is constant.

The gas's final volume, V₂ =?

As we know,

• According to Boyle's law, the volume at a fixed mass of gas is inversely proportional to the pressure of the gas, at the constant temperature.
• PV = constant
• $P \alpha \frac{1}{V}$

Also,

• $P_{1} V_{1} = P_{2} V_{2}$

After putting the given values in the equation, we get:

• $720\times 20 = 900V_{2}$
• V₂ = $16ml$.

Hence, it will not occupy $4L$ at the same temperature.

The final volume, V₂ = $16ml$.