Question

In the balanced equation, 4KO2 + 2CO2 = 2K2CO3 + 3O2 which two chemicals have a molar ratio of 3:4?

Answer 1

 4KO₂  + 2CO₂  →    2K₂CO₃  + 3 O₂

The two  chemicals  that  have a  molar ratio  of 3:4   is  in equation above O₂   and KO₂

explanation

The molar ratio  is the ratio  between  the amount in moles  of two  compounds  that are involved  in a chemical reaction.

In the  equation above the mole  ratio  is determined  by examining coefficient ( number in front of the formula)

the coefficient of O₂  is 3 while that of KO₂ is 4  therefore the  mole ratio of O₂:KO₂  is 3:4

Answer 2

Answer:

Oxygen gas and potassium superoxide have a molar ratio of 3:4.

Explanation:

$4KO_2 + 2CO_2\rightarrow 2K_2CO_3 + 3O_2$

According to reaction, 4 moles of potassium superoxide reacts with 2 moles of carbon dioxide to give 2 moles of potassium carbonate and 3 moles of oxygen gas.

Mole ratio is defined as ratio of moles of two chemical compounds in a given chemical equation of the reaction.

Moles of potassium superoxide = 4

Moles of carbon dioxide = 2

Moles of potassium carbonate = 2

Moles of oxygen gas = 3

Molar ratio of oxygen to potassium superoxide = $\frac{3 mol}{4 mol}=\frac{3}{4}$

Oxygen gas and potassium superoxide have a molar ratio of 3:4.