Question

Determine four different mole ratios from the following equation.C10H8 + 12O2 → 10CO2 + 4H2O

Answer 1

Let's call A C10H8, B 12O2, C 10CO2, and D 4H2O.

The ratio is the division between two of the compounds.

For example, let's see the ratio between A and B:

`(A)/(B)=(1molC_(10)H_8)/(12molO_2)=(1)/(12)=1\colon12,`

Now, let's see the ratio between A and C:

`(A)/(C)=(1molC_(10)H_8)/(10CO_2)=(1)/(10)=1\colon10,`

The mole ratio between B and C:

`(B)/(C)=\frac{12mol_{}O_2_{}}{10molCO_2}=(6molO_2)/(5molCO_2)=(6)/(5)=6\colon5,`

And finally, the mole ratio between B and D:

`(B)/(D)=(12molO_2)/(4molH_2O)=(3molO_2)/(1molH_2O)=(3)/(1)=3\colon1.`

In this last example, you can interpret the mole ratios like this: three moles of O2 produce 1 mole of water (H2O). And so on with the other examples.