Q1:
A- A scientist measures the standard enthalpy change for the following reaction to be 71.9 kJ :
2CO2(g) + 5 H2(g) ----> C2H2(g) + 4 H2O(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO2(g) is____ kJ/mol.
B- A scientist measures the standard enthalpy change for the following reaction to be -139.1 kJ :
H2(g) + C2H4(g) ----> C2H6(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of C2H4(g) is ___kJ/mol.
C- A scientist measures the standard enthalpy change for the following reaction to be -593.4 kJ :
2CO(g) + O2(g) ----> 2CO2(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO2(g) is ___kJ/mol.
Q1:
A- A scientist measures the standard enthalpy change for the following reaction to be 71.9 kJ :
2CO2(g) + 5 H2(g) ----> C2H2(g) + 4 H2O(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO2(g) is____ kJ/mol.
B- A scientist measures the standard enthalpy change for the following reaction to be -139.1 kJ :
H2(g) + C2H4(g) ----> C2H6(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of C2H4(g) is ___kJ/mol.
C- A scientist measures the standard enthalpy change for the following reaction to be -593.4 kJ :
2CO(g) + O2(g) ----> 2CO2(g)
Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO2(g) is ___kJ/mol.
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