The combustion of liquid ethanol is represented by C _2 H _5 OH (l)+3 , O _2(g) 2 ,…

CHEMISTRY · Single correct · CBSE · Chemistry · Thermodynamics · Thermodynamics

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}

, where

M=46\text{ g 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