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Efficiency of Fuel

ntif enthalpi...

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ntif enthalpies of formation for c2h4 (g) ,co2 (g) and h2o (l) at 25 degree centigrade 1 atm pressure are 52, -394 and -286 kj/mol respectively, then enthalpy of combustion of c2h4(g), will be n

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Q. If enthalpies of formation for

C_{2} H_{4} (g), C O_{2} (g)

H_{2} O (I)

25^{0}

1

atm pressure are

52; - 394

- 286 k J / m o l

respectively, then enthalpy of combustion of

C_{2} H_{4} (g)

Q. If enthalpies of formation for

C_{2} H_{4} (g)

C O_{2} (g)

H_{2} O (l)

25^{o}

1

atm pressure be

52

- 394

- 286

k J m o l^{- 1}

respectively, then the enthalpy of combustion of

C_{2} H_{4} (g)

Q. If enthalpies of formation for

C_{2} H_{4} (g), {C O}_{2} (g)

H_{2} O (l)

25^{o} C

1

atm pressure be

52, - 394

- 286 k J

{m o l}^{- 1}

respectively, enthalpy of combustion of

C_{2} H_{4} (g)

Q. The enthalpy of combustion of methane graphite and dihydrogen at

298 K

- 890.3

m o l^{- 1}

- 285.8

m o l^{- 1}

respectively. Enthalpy of formation of

C H_{4} (g)

Q. The enthalpy of combustion of methane, graphite and dihydrogen at

298 K

- 890.3

k J {m o l}^{- 1}, - 393.5

k J {m o l}^{- 1}, - 285.8

k J {m o l}^{- 1}

respectively. Enthalpy of formation of

{C H}_{4 (g)}

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