A sample of liquid ethanol absorbs of energy at constant pressure

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

Problem

12.0\,\text{g}

sample of liquid ethanol absorbs

3.15\,\text{kJ}

of energy at constant pressure. The molar heat capacity of liquid ethanol is

112\,\text{J mol}^{-1}\,^{\circ}\text{C}^{-1}

. If the initial temperature of the ethanol was

18.0^{\circ}\text{C}

, what is its final temperature? (Molar mass of ethanol

=46.07\,\text{g mol}^{-1}

) (a)

5.9\times10^{1}\,^{\circ}\text{C}

(b)

2.5\times10^{1}\,^{\circ}\text{C}

(c)

1.27\times10^{2}\,^{\circ}\text{C}

(d)

4.3\times10^{1}\,^{\circ}\text{C}