CHEM 111 Lecture Notes - Lecture 10: Calcium Carbonate, Limiting Reagent, Magic 2Ch

• School: UMASS-Amherst
• Department: Chemistry
• Course: CHEM 111
• Professor: Al- Hariri Lara

Document Summary

Subscripts: (g): gas (aq): aqueous, dissolved in water (l): liquid (s): solid. Matter can neither be created nor destroyed (if we start with 2 moles of an element, we must end up with 2 moles of it) 2(mg + 1/2o2 ---> mgo) = 2mg + o2 --->2mgo. Incomplete combustion: doing the reaction somewhere with not enough o2 and ending up with co. Question: the following is a reaction of magnesium nitride and sulfuric acid. Determine the amount (moles) of h2so4 consumed and the amount of (moles) of. Mgso4 produced when 3. 5 mol of mg3n2 reacts. 3. 5 mol of mg3n2 x (4 mole of h2so4)/(1 mol of mg3n2) = 14 mole of h2so4. 3. 5 mol of mg3n2 x (3 mol of mgso4)/(1 mol of mg3n2) = 10. 5 mol of 3 mol of mgso4. The following is a reaction of calcium carbonate with hydrochloric acid. Caco3 + 2hcl ---> cacl2 + co2 + h2o.