Molar Ratio

[Mulin_Li_2J]

I am a bit confused with the definition of Molar Ratio. Does it describe the ratio of a single element in a certain compound with respect to other elements(like C in CO2), or is it like stoichiometric numbers indicating relative amount of reactants and products in a chemical reaction(Like CO2 in a combustion reaction)?

[Heba Mengesha 3D]

A molar ratio is used to identify the number of moles a product that are produced from a reactant as well as to figure out how many moles are required to react with the product.

[ALegala_2I]

To clarify the statement above, a molar ratio refers to BOTH the stoichemetric coefficients in a chemical equation and the moles of atoms in a molecule. For example, the chemical equation C2H4 + 3O2 → 2CO2 + 2H2O. There is a molar ratio of 2 water molecules to 2 carbon dioxide molecules. Within the molecule H2O, there is 2 moles of hydrogen atoms for one mole of water.

[Anna Wu 1H]

The molar ratio can convert any one substance to any other substance as long as you know the ratio of one to another. Therefore, it applies to single compounds (ex: you can use mole ratios to find mass of H in given amount of H2O), or to an entire reaction (in which you would use the balanced equation coefficients).

[305376058]

Molar ratios express the proportion of moles between elements in a reaction. To find the molar ratio, you would balance an equation and then look at the coeffecients.