If 1.0 g of sodium bicarbonate and 1.0g citric acid are reacted, which is limiting? How much carbon dioxide is produced?
Answers
Answer:
Sample Limiting Reactant Problem & Calculation:
A 9.00 g sample of H3C6H5O7, citric acid in lemon juice reacts with 14.3 g of baking soda, NaHCO3. A) How many grams of carbon dioxide will be produced, which is called the theoretical yield? B) What substance is the limiting reactant? C) What substance is in excess? D) How many grams of the excess reactant is left over (remaining) after the reaction stops?
STEP 1: is to write and balance the chemical equation for this reaction.
H3C6H5O7 (aq) + 3 NaHCO3 (aq) ⎯→ 3 CO2 (g) + 3 H2O (l) + Na3 C6H5O7 (aq)
STEP 2: is to list the given information from the question underneath the appropriate substances to gain a better idea of what we are calculating.
H3C6H5O7 (aq) + 3 NaHCO3 (aq) ⎯→ 3 CO2 (g) + 3 H2O (l) + Na3 C6H5O7 (aq) 9.00 g 14.3 g ? g
STEP 3: is to use stoichiometry to calculate how much product is produced by each one of the reactants.
1 mol H3C6H5O7 3 mol CO2 44.01 g CO2
9.00 g H3C6H5O7 X ⎯⎯⎯⎯⎯⎯⎯ X ⎯⎯⎯⎯⎯⎯⎯ X ⎯⎯⎯⎯⎯⎯⎯ = 6.19 g CO2 Theoretical Yield
Limiting 192.1 g H3C6H5O7 1 mol H3C6H5O7 1 mol CO2 Reactant
1 mol NaHCO3 3 mol CO2 44.01 g CO2
14.3 g NaHCO3 X ⎯⎯⎯⎯⎯⎯⎯ X ⎯⎯⎯⎯⎯⎯⎯ X ⎯⎯⎯⎯⎯⎯⎯ = 7.49 g CO2
Substance in Excess
84.01 g NaHCO3 3 mol NaHCO3 1 mol CO2
STEP 4: is to analyze the above result that you setup and calculated to actually answer questions asked above including A) the amount of product produced, theoretical yield, B) limiting reactant, and C) the substance in excess.
A) The amount of product, CO2 produced from this reaction is 6.19 grams, the smaller amount that you calculated from the two calculations above. This answer is also called the theoretical yield.
B) The reacting substance that produces the smaller amount of product (the theoretical yield), in this case H3C6H5O7, citric acid is the limiting reactant.
C) The other reacting substance in this reaction, baking soda, NaHCO3, is the substance in excess.
Explanation:
Answer:
1.20 gram because sodium and acid is limiting!