Chemistry MCQ 2 - Questions Answers

1 / 7

Comment on the possibility of defining a Boyle Temperature if a=b=0

The gas has no Boyle temperature

The gas has a definite Boyle temperature

All the temperatures are Boyle temperatures

$T_{B}=\frac{a}{R\times b}$

2 / 7

The Boyle temperature of nitrogen gas given a=1.4 atm lit² mol^-2 and b = 0.04 lit mol^-1

432 K

437 K

427 K

430 K

3 / 7

Comment on the possibility of defining a Boyle temperature if a=0

The gas has no Boyle temperature

The gas has a definite Boyle temperature

All the temperatures are Boyle temperatures

4 / 7

What are the CGS and SI units of Van der Waals constant b?

m² mol⁻¹ and cm² mol⁻¹

m² mol⁻² and cm² mol⁻²

m³ mol⁻¹ and cm³ mol⁻¹

m⁴ mol⁻¹ and cm⁴ mol⁻¹

$\therefore deviation=\frac{4.92-4.904}{4.904}\times 100=0.326$

5 / 7

Find the extent of deviation from the ideal behavior of 2 moles of nitrogen gas occupying 10 lit volume at 270°C
Given, a = 1.4 atm liter² mol^-2 and b=0.04 lit mol^-1.

0.328%

0.330%

0.322%

0.326%

$unit\, of\, a=\frac{unit\, of\, P\times \left ( unit\, of\, V \right )^{2}}{\left (unit\, of\, n \right )^{2}}$

6 / 7

What is the SI unit of Van der Waals constant a?

newton m⁴ mol⁻²

dyne m⁴ mol⁻²

N cm⁴ mol⁻²

N m⁶ mol⁻²

7 / 7

If a = 1.4 atm liter² mol^-2 and b=0.04 lit mol^-1, the pressure of 2 moles of nitrogen gas occupying 10 lit volume at 270°C

4.804

4.904 atm

4.906

4.004

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