younaiskandar younaiskandar
  • 02-02-2021
  • Chemistry
contestada

for the following word equation, write it as a chemical equation, then balance it
potassium + oxygen gas----- potassium oxide

Respuesta :

podgorica podgorica
  • 07-02-2021

Answer:

4K + O2 ---> 2K2O

Explanation:

The valence of Potassium is +1

The valence of oxygen is -2

Thus, two atoms of potassium will attach with one atom of oxygen to form molecule of potassium oxide.

This can be written as

2K + O ---> K2O

However, this is not the balanced equation as oxygen exists as O2 molecule.

Thus, the balanced equation is

4K + O2 ---> 2K2O

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