Which chemical equation represents the reaction for which the enthalpy change is equal to the standard enthalpy of formation of liquid ethanol?
2C(s)+6H(g)+O(g)→C2H5OH(l)2\text{C(s)} + 6\text{H(g)} + \text{O(g)} \rightarrow \text{C}_2\text{H}_5\text{OH(l)}2C(s)+6H(g)+O(g)→C2H5OH(l)
2C(g)+3H2(g)+12O2(g)→C2H5OH(l)2\text{C(g)} + 3\text{H}_2\text{(g)} + \frac{1}{2}\text{O}_2\text{(g)} \rightarrow \text{C}_2\text{H}_5\text{OH(l)}2C(g)+3H2(g)+21O2(g)→C2H5OH(l)
2C(s)+3H2(g)+12O2(g)→C2H5OH(l)2\text{C(s)} + 3\text{H}_2\text{(g)} + \frac{1}{2}\text{O}_2\text{(g)} \rightarrow \text{C}_2\text{H}_5\text{OH(l)}2C(s)+3H2(g)+21O2(g)→C2H5OH(l)
4C(s)+6H2(g)+O2(g)→2C2H5OH(l)4\text{C(s)} + 6\text{H}_2\text{(g)} + \text{O}_2\text{(g)} \rightarrow 2\text{C}_2\text{H}_5\text{OH(l)}4C(s)+6H2(g)+O2(g)→2C2H5OH(l)
