Isooctane Properties and Calculations

The video tutorial covers the enthalpy of combustion, focusing on calculating the heat released from the combustion of 1.00 liters of isooctane (C8H18). It provides necessary data such as the density of isooctane and its Delta H of combustion. The tutorial guides through converting liters to milliliters, then to grams using density, and finally to moles. It concludes by calculating the energy released using the thermochemical data provided.

What is the chemical formula of isooctane?

• C8H18

• C7H16

• C6H14

• C9H20

What is the density of isooctane in grams per milliliter?

• 0.912

• 0.692

• 0.789

• 0.850

How many milliliters are there in 1.00 liters of isooctane?

• 10000

• 10

• 100

• 1000

What is the mass of 1.00 liters of isooctane in grams?

• 750

• 692

• 650

• 800

What is the molecular weight of isooctane used in the calculation?

• 128 g/mol

• 100 g/mol

• 114 g/mol

• 90 g/mol

How many moles of isooctane are present in 692 grams?

• 6.50

• 7.00

• 5.50

• 6.07

What is the enthalpy of combustion for isooctane in kilojoules per mole?

• -6000

• -4500

• -5000

• -5461

What is the total energy released during the combustion of 1.00 liters of isooctane?

• -3.00 x 10^4 kJ

• -4.00 x 10^4 kJ

• -2.50 x 10^4 kJ

• -3.31 x 10^4 kJ