Question

The chemical equation below shows the reaction between carbon dioxide (CO2) and lithium hydroxide (LiOH).

CO2 + 2LiOH Li2CO3 + H2O

The molar mass CO2 is 44.01 g/mol. How many moles of LiOH are needed to react completely with 25.5 g of CO2?

Answer 1

1. check to see if the chemical equation is balanced, if not, balance it by adding the appropriate coefficients, if yes, proceed to step 2
2. convert 25.5 g of CO2 to moles by dividing by the Molar mass
3. use the equation to determine how many moles of LiOH that would be (compare the coefficients of LiOH and CO2)