# Problem: At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat KClO3: 2 KClO3(s) → 2 KCl(s) + 3 O2(g), ΔH = –89.4kJFor this reaction, calculate ΔH for the formation of 10.6 g of KCl.

###### FREE Expert Solution

We are asked to calculate ΔH for the formation of 10.6 g of KCl.

2 KClO3(s) → 2 KCl(s) + 3 O2(g), ΔH = –89.4kJ

Molar mass KCl = 74.55 g/mol

79% (23 ratings) ###### Problem Details

At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat KClO3: 2 KClO3(s) → 2 KCl(s) + 3 O2(g), ΔH = –89.4kJ

For this reaction, calculate ΔH for the formation of 10.6 g of KCl.

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 Equations concept. You can view video lessons to learn Thermochemical Equations. Or if you need more Thermochemical Equations practice, you can also practice Thermochemical Equations practice problems.