Chemical Reactions and Stoichiometry

Classifying Reaction

100

Classify this chemical reaction: C(s) + O₂(g) → CO₂(g) 

 What is a synthesis reaction?

200

Classify this reaction: CaCO₃(s) → CaO(s) + CO₂(g)

 what is a decomposition reaction?

300

Classify this reaction: Zn(s) + Cu₂SO₄(aq) → ZnSO₄(aq) + Cu(s)

What is a single replacement reaction?

400

Classify this reaction: N₂H₄(g) + O₂(g) → NO₂(g) + H₂O

what is combustion?

500

Classify this chemical reaction: HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l)

What is an acid-base reaction?

Limiting Reactant

100

Write and balance the following equation:

Aluminum metal reacts with chlorine gas in a synthesis reaction.

2Al (s) + 3Cl₂ + --> 2AlCl₃

200

Determine the mass in grams of the product formed, if 15.2 g of aluminum reacts with 39.1g of chlorine.

what is 49.0 g AlCl₃

300

Who is the limiting reactant?

Cl₂

400

If you made 47.3 g of AlCl₃ in the lab, what is your percent yield?

what is 96.5 %

500

the amount of excess reactant left over

what is 5.3 g?

Stoichiometry

100

2B₂H₆ + 7O₂ →  4HBO₂ + 6H₂O

What mass of O₂ will be needed to burn 36.1 g of B₂H₆ ?

What is  146 g O₂ 

200

2KClO₃ ---> 2KCl + 3O₂

How many moles of O₂ can be produced by letting 12.00 moles of KClO₃ react?

what is 18.00 mol of O₂

300

2K + Cl₂ ---> 2KCl

How many grams of KCl is produced from 2.50 g of K and excess Cl₂.

what is 4.77 g of KCl

400

Na₂O + H₂O ---> 2NaOH

How many grams of NaOH is produced from 1.20 x 10² grams of Na₂O?

what is 155 g of NaOH

500

8Fe + S₈ ---> 8FeS

What mass of iron is needed to react with 16.0 grams of sulfur?

what is 27.9 g of Fe

Balancing Equations

100

balance the equation: FeCl₃ + MgO →  Fe₂O₃ + MgCl₂

what is 2FeCl₃ + 3MgO ---> Fe₂O₃ + 3MgCl₂

200

balance the equation: Li + H₃PO₄ ---> H₂ + Li₃PO₄

what is 6Li + 2H₃PO₄ ---> 3H₂ + 2Li₃PO₄

300

balance the equation: FeS₂ + Cl₂ ---> FeCl₃ + S₂Cl₂

what is 2FeS₂ + 5Cl₂ ---> 2FeCl₃ + 2S₂Cl₂

400

balance the equation:H₂(g) + V₂O₅(s) ---> V₂O₃(s) + H₂O(ℓ)

what is 2H₂(g) + V₂O₅(s) ---> V₂O₃(s) + 2H₂O(ℓ)

500

balance the equation: Fe + HC₂H₃O₂ ---> Fe(C₂H₃O₂)₃ + H₂

what is 2Fe + 6HC₂H₃O₂---> 2Fe(C₂H₃O₂)₃ + 3H₂

Vocabulary

100

Means dissolved in solution, and most acids are this 

what is aqueous

200

The reactant in a chemical reaction that limits the amount of product that can be formed.

what is the limiting reactant

300

is the reactant in a chemical reaction with a greater amount than necessary to react completely with the limiting reactant.

what is the excess reactant?

400

the reason behind balancing a chemical equation and why it must be done before a stoichiometry problem

what is the law of conservation of mass

500

the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.

what is stoichiometry