MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Introduction

How much heat...

Question

How much heat energy must be supplied to 14 g of nitrogen gas at room temperature to raise its temperature by $40^{\circ} C$ at a constant pressure?

Open in App

Solution

14 g of $N_{2} = \frac{14}{28} = \frac{1}{2} m o l e s o f N_{2}$
Given, $Δ T = 40^{\circ} C$
For a diatomic gas, $C_{p} = \frac{7 R}{2}$
Heat required, $Δ H = n C_{p} Δ T = n (\frac{7 R}{2}) Δ T = \frac{1}{2} (\frac{7}{2} \times 8.314) \times 40 = 581.98 J$

Suggest Corrections

thumbs-up

10

Similar questions

Q. How much heat energy in joules must be supplied to

14 g

of nitrogen at room temperature to raise its temperature by

40^{o} C

at constant pressure? (Mol. wt of

N_{2} = 28 g m, R =

Q. How much heat energy in joules must be supplied to 14gms of nitrogen at room temperature to rise its temperature by

40^{o} C

at constant pressure? (Mol.wt.of

N_{2} = 28 g m, R = c o n s t a n t

)

Q. What amount of heat must be supplied to 2.0 × 10¯² kg of nitrogen (at room temperature) to raise its temperature by 45 °C at constant pressure ? (Molecular mass of N² = 28; R = 8.3 J mol–¯¹ K¯¹.)

Q. What amount of heat must be supplied to

2.0 \times 10^{- 2} k g

of nitrogen (at room temperature) to raise its temperature by

45^{o} C

at constant pressure? (Molecular mass of

N_{2} = 28 : R = 8.3 m o l^{- 1} K^{- 1}

Q. Heat energy of

743 J

is needed to raise the temperature of

5

moles of an ideal gas by

2 K

at constant pressure. How much heat energy is needed to raise the temperature of the same mass of the gas by

2 K

at constant volume?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon