Question

The equation below is for potassium oxide. 4K + O2 → 2K2O The ratio of atoms of potassium to ratio of atoms of oxygen is .

Answer 1

The equation below is for potassium oxide.

4K + O2 2K2O

What is the ratio of atoms of potassium to atoms of oxygen?

1:2

2:1

4:1

1:4

Answer:B

Answer 2

2:1

Step-by-step explanation:

The given equation is :

`4K+O_2\rightarrow 2K_2O`

K is potassium

O is oxygen

This equation shows a combustion reaction that shows that when potassium reacts with oxygen it form potassium oxide. When 4 moles of potassium reacts with two moles of oxygen it form two moles of potassium oxide.

Number of atoms of potassium is 4

Number of moles of oxygen is 2

Ratio is 4:2 or 2:1