Problem

The combustion of liquid ethanol is represented by

\text{C}_{2}\text{H}_{5}\text{OH}(l)+3\,\text{O}_{2}(g)\rightarrow2\,\text{CO}_{2}(g)+3\,\text{H}_{2}\text{O}(l)

with

\Delta H_{\text{rxn}}=-1.367\times10^{3}\,\text{kJ}

per mole of reaction. An industrial burner consumes ethanol at a steady rate of

46\,\text{g}

per minute for

15\,\text{min}

(

M=46\,\text{g}\,\text{mol}^{-1}

). Which of the following is closest to the total heat released during this time interval? a)

4.10\times10^{4}\,\text{kJ}

released b)

2.05\times10^{4}\,\text{kJ}

absorbed c)

2.05\times10^{4}\,\text{kJ}

released d)

1.37\times10^{3}\,\text{kJ}

released