Problem: The value of ΔH° for the following reaction is -3351 kJ.2Al(s) + 3O2(g)      →       2Al 2O3(s)What is the ΔH° for the formation of 75.0 g of Al 2O3(s) (kJ)? a. -2.51 x 107b. -1.26 x 105c. -2460d. -1230e. +3351

FREE Expert Solution
87% (125 ratings)
Problem Details

The value of ΔH° for the following reaction is -3351 kJ.

2Al(s) + 3O2(g)      →       2Al 2O3(s)

What is the ΔH° for the formation of 75.0 g of Al 2O3(s) (kJ)?

a. -2.51 x 107

b. -1.26 x 105

c. -2460

d. -1230

e. +3351

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Thermochemical Equation concept. You can view video lessons to learn Thermochemical Equation. Or if you need more Thermochemical Equation practice, you can also practice Thermochemical Equation practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofThe value of ΔH° for the following reaction is -3351 kJ.2Al(...as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Jules took 2 minutes and 21 seconds to solve this problem. You can follow their steps in the video explanation above.