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Calculate the enthalpy of formation of e...

Calculate the enthalpy of formation of ethane from the following data :
(i) `C(s) + O_(2)(g) to CO_(2)(g)`, `Delta_(r)H^(@) = -393.5 kJ`
(ii) `H_(2)(g) + 1/2 O_(2)(g) to H_(2)O(l), Delta_(r)H^(@) = -285.8 kJ`
(iii) `C_(2)H_(6)(g) + 7/2O_(2)(g) to 2CO_(2)(g) + 3H_(2)O(l), Delta_(r)H^(@) = -1560.0 kJ`

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AI Generated Solution

To calculate the enthalpy of formation of ethane (C₂H₆) from the given data, we will 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 formation reaction for ethane**: The formation reaction for ethane can be written as: \[ 2C(s) + 3H_2(g) \rightarrow C_2H_6(g) ...
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