11 & 12 Chapter Review

Chemical Reaction

100

2CO + O₂ → 2CO₂

What type of reaction is this?

Combination/Synthesis

200

What type of reaction is this?

C₅H₁₂ + 8O₂ →  5CO₂ +  6H₂O

Combustion

300

What type of reaction is this? Does it exist?

Au +HCl  →  AuCl + H

Single-replacement

Doesn't exist

Balancing Equations

100

On which side do you put the products?

Left or Right?

Right

200

Cl₂ + KI → I₂ + KCl

Balance the equation

Cl₂ +2KI → I₂ + 2KCl

300

Potassium + copper (II) chloride →

2K + CuCl₂ → Cu + 2KCl

Stoichiometry

100

The theoretical yield of water is 256 grams

The actual yield was 224 grams

What is the percent yield?

87.5%

200

2H₂ + O₂ → 2H₂O

How many moles of hydrogen gas are needed to react completely with 62 moles of oxygen gas?

124 moles of hydrogen gas

300

Find the MOLECULES of sodium required to produce 6.78 L of hydrogen gas at STP.

2Na + H₂O → 2NaOH + H₂

3.64 *10²³ molecules of sodium (Na)

Final Jeopardy

100

2 Al + 6 HBr → 2 AlBr₃ +3 H₂

3.22 moles of Al reacts with 4.96 moles of HBr

What is the limiting reactant?

HBr