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Ethylene on combustion gives carbon diox...

Ethylene on combustion gives carbon dioxide and water. Its heat of combustion is `1410.0 kJ mol^(-1)`. If the heat of formation of `CO_(2)` and `H_(2)O` are `393.3 kJ` and `286.2 kJ`, respectively. Calculate the heat of formation of ethylene.

Text Solution

AI Generated Solution

To calculate the heat of formation of ethylene (C₂H₄) from the given data, we can use Hess's law, which states that the total enthalpy change for a reaction is the sum of the enthalpy changes for the individual steps of the reaction. ### Step-by-Step Solution: 1. **Write the combustion reaction of ethylene:** The combustion of ethylene can be represented as: \[ \text{C}_2\text{H}_4(g) + 3\text{O}_2(g) \rightarrow 2\text{CO}_2(g) + 2\text{H}_2\text{O}(l) ...
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Knowledge Check

  • The heat of combustion of C, S and CS_(2) are -393.3kJ, -293.7kJ and -1108.76kJ. What will be the heat of formation of CS_(2) ?

    A
    `-128.02kJ`
    B
    `+970kJ`
    C
    `+1108.7kJ`
    D
    `+128.06kJ`
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