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# Need explanation for: A gas such as carbon monoxide would be most likely to obey the ideal gas law at:

A gas such as carbon monoxide would be most likely to obey the ideal gas law at:

• Option 1)

High temperatures and low pressure.

• Option 2)

Low temperatures and high pressure.

• Option 3)

High temperatures and high pressure.

• Option 4)

Low temperatures and low pressure.

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Ideal Gas Law -

$PV=nRT$

- wherein

P - Pressure

V - Volume

n - No. of Moles

R - Gas Constant

T - Temperature

A real gas can behave as an ideal gas if volume of molecule is negligible and interaction between the molecule is negligible. This will happen when number of molecule per unit volume is very small.

From ideal gas equation,

$PV=nRT$

$or\; \frac{v}{n}=\frac{RT}{P}$

$\frac{v}{n}$ will be very large if $T$ is very large and $P$ is very small.

Option 1)

High temperatures and low pressure.

This option is correct.

Option 2)

Low temperatures and high pressure.

This option is incorrect.

Option 3)

High temperatures and high pressure.

This option is incorrect.

Option 4)

Low temperatures and low pressure.

This option is incorrect.

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