Stoichiometry with a reactant in Excess Quantity. Example:
5.0 g of oxygen and hydrogen are mixed. A spark caused an exothermic reaction to produce water. Determine how much water was produced in this reaction.
a) What mass of CS2 is produced when 17.0 g of C are reacted with 39.5 g of SO2?
5C + 2 SO2 ---- CS2 + 4 CO
b) What mass of the excess reactant will be left over?
A double replacement reaction takes place when 0.50 L of 0.20 M of sodium chloride is mixed with 0.50 L of 0.50 M Lead II nitrate. Which reactant is in excess? Calculate the moles of lead II chloride produced from this reaction.