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Bond energy

Using the data provided, calculate the multiple bond energy ({

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Hard

Solving time: 4 mins

Using the data provided, calculate the multiple bond energy $(kJ mol^{- 1})$ of a $C \equiv C$ bond in $C_{2} H_{2}$ . That energy is (take the bond energy of a $C - H$ bond as $350 kJ mol^{- 1}$ ) $2 C (s) + H_{2} (g) ⟶ C_{2} H_{2} (g); Δ H = 225 kJ mol^{- 1}$ $2 C (s) ⟶ 2 C (g); Δ H = 1410 kJ mol^{- 1}$ $H_{2} (g) ⟶ 2 H (g); Δ H = 330 kJ mol^{- 1}$

1165

837

865

815

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Updated on: Jan 11, 2023

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William Discussed

Using the data provided, calculate the multiple bond energy

(kJ mol^{- 1})

of a

C \equiv C

bond in

C_{2} H_{2}

. That energy is (take the bond energy of a

C - H

bond as

350 kJ mol^{- 1}

)

2 C (s) + H_{2} (g) ⟶ C_{2} H_{2} (g); Δ H = 225 kJ mol^{- 1}

2 C (s) ⟶ 2 C (g); Δ H = 1410 kJ mol^{- 1}

H_{2} (g) ⟶ 2 H (g); Δ H = 330 kJ mol^{- 1}

14 mins ago

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14 mins ago

Text solutionVerified

(d) 815

Δ H_{R} = (bondenergy)_{R} - (bondenergy)_{P}

225 = ([1410 + 330] - [Δ H_{c \equiv c} + 2 \times 350])

∴ Δ H_{c \equiv c} = 815 kJ / mol

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Question Text	Using the data provided, calculate the multiple bond energy $(kJ mol^{- 1})$ of a $C \equiv C$ bond in $C_{2} H_{2}$ . That energy is (take the bond energy of a $C - H$ bond as $350 kJ mol^{- 1}$ ) $2 C (s) + H_{2} (g) ⟶ C_{2} H_{2} (g); Δ H = 225 kJ mol^{- 1}$ $2 C (s) ⟶ 2 C (g); Δ H = 1410 kJ mol^{- 1}$ $H_{2} (g) ⟶ 2 H (g); Δ H = 330 kJ mol^{- 1}$
Updated On	Jan 11, 2023
Topic	Thermodynamics and Thermochemistry
Subject	Chemistry
Class	Class 11
Answer Type	Text solution:1 Video solution: 3
Upvotes	415
Avg. Video Duration	8 min

Text solutionVerified

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Using the data provided, calculate the multiple bond energy (kJmol−1) of a C≡C bond in C2​H2​. That energy is (take the bond energy of a C−H bond as 350 kJ mol−1 ) 2C(s)+H2​( g)⟶C2​H2​(g);ΔH=225 kJ mol−1 2C(s)⟶2C(g);ΔH=1410 kJ mol−1 H2​( g)⟶2H(g);ΔH=330 kJ mol−1

Text solutionVerified

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