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

Heat of Reaction

The enthalpy ...

Question

The enthalpy change for the reaction of $50$ mL of ethylene with $50$ mL of $H_{2}$ at $1.5$ atm pressure is $- 0.31 k J$ . The value of $△ U$ is:

302 J

No worries! We‘ve got your back. Try BYJU‘S free classes today!

- 302 J

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

- 302 k J

No worries! We‘ve got your back. Try BYJU‘S free classes today!

none of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $- 302 J$
The reaction is given by,
$C_{2} H_{4} + H_{2} \to C_{2} H_{6}$
Here the ratio of reactant is 1:1 and product is also forming in ratio of 1.
Therefore, 50 ml of ethylene on reaction with 50 ml of $H_{2}$ will produce 50 ml. of ethane.
Change in volume is 50ml (ethane)-100ml $(C_{2} H_{4} + H_{2})$ = 50ml= 0.05L
So, $P Δ V = - 1.5 \times 0.05 = 0.075 L a t m \approx - 7.5$ Jolues
Now,
$Δ U = Δ H - P Δ V = - 0.31 k J + 7.5 J = - 302 J$

Suggest Corrections

Similar questions

The enthalpy change for the reaction of 50.00 ml of ethylene with 50.00 ml of $H_{2}$ at 1.5 atm pressure is $Δ H_{-}$ = -0.31 kJ. The value of $Δ E$ will be

Q. The enthalpy change for the reaction of

50 m l

of ethylene with

50.0 m l

H_{2}

1.5

atm pressure is

Δ H = - 0.31 K J

. What is the

Δ U

Q. The Enthalpy change for the reaction of

59 m l

of ethylene with

50.0 m l

H_{2}

1.5

bar pressure is $\Delta H=-0.31\ KJ$. What is the change in internal energy?

Q. The enthalpy change for the reaction

C_{2} H_{4} (g) + H_{2} (g) ⟶ C_{2} H_{6}

- 620 J

when 100ml of ethylene and 100 ml of

H_{2}

react. Calculate volume work and

Δ U .

100

ml of nitrogen at

0.30

atm, pressure and

50

ml of carbon dioxide at

0.60

atm. pressure are introduced into a vessel of volume

150

ml without any change in temperature. What will be ratio of the partial pressure of nitrogen to carbon dioxide in the vessel?

Join BYJU'S Learning Program

The enthalpy change for the reaction of 50 mL of ethylene with 50 mL of H2 at 1.5 atm pressure is −0.31 kJ. The value of △U is:

The enthalpy change for the reaction of $50$ mL of ethylene with $50$ mL of $H_{2}$ at $1.5$ atm pressure is $- 0.31 k J$ . The value of $△ U$ is: