Question

state the equation for the formation of ethane from its elements and ghen detwrmine the value for the standard enthalpy of formation of ethane

Answer 1

The standard enthalpy of formation of ethane is determined as -192.5 kJ/mol.

Reaction for the formation of ethane

The reaction for the formation of ethane is given as;

2C + 3H₂ → C₂H₆

Where;

• C is carbon (graphite)
• H is hydrogen
• C₂H₆ is ethane

Standard enthalpy of formation of ethane

The standard enthalpy of formation of ethane is calculated as follows;

ΔH = ΔH₁ + ΔH₂  + ΔH₃

where;

• ΔH₁ is heat of formation of graphite = -286 kJ/mol
• ΔH₂ is heat of formation of hydrogen = -393.5 kJ/mol
• ΔH₃ is heat of formation of ethane = 1560 kJ/mol

2C + 3H₂ → C₂H₆

ΔH = 2(-286) + 3(-393.5) + 1(1560)

ΔH = -572 - 1180.5 + 1560

ΔH = -192.5 kJ/mol

Learn more about standard enthalpy here: brainly.com/question/14047927

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