Limiting Reactant and Excess Reactant Calculations
Chemistry ⇒ Stoichiometry and Chemical Calculations
Limiting Reactant and Excess Reactant Calculations starts at 11 and continues till grade 12.
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A mixture of 10.0 g of Ca and 10.0 g of O2 reacts to form CaO. The balanced equation is 2Ca + O2 → 2CaO. (Molar masses: Ca = 40.0 g/mol, O2 = 32.0 g/mol) Which is the limiting reactant?
A reaction between 8.0 g of CH4 and 32.0 g of O2 produces CO2 and H2O. Which is the limiting reactant? (Molar masses: CH4 = 16.0 g/mol, O2 = 32.0 g/mol)
A reaction has the equation 2A + B → 3C. If you have 4 mol of A and 1 mol of B, which is the limiting reactant?
A reaction has the equation 2Fe + 3S → Fe2S3. If you have 5.6 g of Fe and 8.0 g of S, which is the limiting reactant? (Molar masses: Fe = 56.0 g/mol, S = 32.0 g/mol)
A reaction has the equation 2K + Br2 → 2KBr. If you have 0.5 mol of K and 0.3 mol of Br2, which is the limiting reactant?
A reaction has the equation C + O2 → CO2. If you have 12.0 g of C and 32.0 g of O2, which is the limiting reactant? (Molar masses: C = 12.0 g/mol, O2 = 32.0 g/mol)
A reaction requires 2 moles of A for every 1 mole of B. If you have 3 moles of A and 2 moles of B, which is the limiting reactant?
A student mixes 5.0 g of NaCl with 7.0 g of AgNO3 in the reaction: NaCl + AgNO3 → AgCl + NaNO3. Which is the limiting reactant? (Molar masses: NaCl = 58.5 g/mol, AgNO3 = 170 g/mol)
If 10.0 g of H2 reacts with 80.0 g of O2 in the reaction 2H2 + O2 → 2H2O, what is the limiting reactant? (Molar masses: H2 = 2.0 g/mol, O2 = 32.0 g/mol)
In a reaction, 10.0 g of A reacts with 20.0 g of B to form C. If the balanced equation is A + 2B → C, and the molar masses are A = 10.0 g/mol, B = 5.0 g/mol, which is the limiting reactant?
In a reaction, 2.0 mol of A reacts with 3.0 mol of B according to the equation A + 2B → C. Which is the limiting reactant?
In a reaction, 3.0 mol of X reacts with 4.0 mol of Y according to the equation X + 2Y → Z. Which is the limiting reactant?
In the reaction 2Al + 3Cl2 → 2AlCl3, if you have 5.0 g of Al and 10.0 g of Cl2, which is the limiting reactant? (Molar masses: Al = 27.0 g/mol, Cl2 = 71.0 g/mol)
In the reaction 2H2 + O2 → 2H2O, if you have 3 moles of H2 and 2 moles of O2, how many moles of water can be formed?
In the reaction 2H2 + O2 → 2H2O, if you have 4 moles of H2 and 2 moles of O2, which is the limiting reactant?
In the reaction 2SO2 + O2 → 2SO3, if you start with 5.0 mol SO2 and 2.0 mol O2, which is the limiting reactant?
In the reaction N2 + 3H2 → 2NH3, if you start with 1 mole of N2 and 2 moles of H2, which is the limiting reactant?
