First balance the equation. Then follow this example of a stoichiometry problem I've posted. It shows step by step what to do.
http://www.jiskha.com/science/chemistry/stoichiometry.html
CoCl3(aq) + K2S(aq) yield Co2S3(s) + KCl(aq)
How many moles of KCl would be produced when 0.470 moles of Co2S3 are produced in the above unbalanced reaction?
How many moles of K2S would be required to react with 0.940 moles of CoCl3?
How many moles of K2S would be required to produce 0.320 moles Co2S3?
1 answer