When 12.0 g of carbon reacted with oxygen to form CO and at and constant pressure,…

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

When 12.0 g of carbon reacted with oxygen to form CO and

\text{CO}_2

25^\circ\text{C}

and constant pressure, 75.0 kcal of heat was liberated and no carbon remained. Calculate the mass of oxygen needed for it and the mole of CO and

\text{CO}_2

formed. Given,

\Delta H_f \text{ CO}_2 = -94.05

and

\Delta H_f \text{ CO} = -26.41 \text{ kcal mol}^{-1}