Review quiz 1_S2 Final exam

H₂(g) + 2AgCl(aq) ---> 2Ag(s) + 2HCl(aq)

The redox reaction above can also be classified as _____.

• synthesis

• single replacement

• combustion

• double replacement

Which of the following is an example of a CHEMICAL change?

• Shattering a window with a baseball

• Ripping paper into 1,000,000,000 tiny pieces

• Rusting an iron bar on a humid day

• Melting a block of copper metal

Which of the following describes the basic structure of single replacement reactions?

• A + B --> C

• A + B --> AB

• A + BC --> AC + B

• AB + CD --> AD + CB

What type of reaction is this?

2NaHCO₃ --> Na₂CO₃ + H₂O + CO₂

• Single Replacement

• Combustion

• Decomposition

• Synthesis

What type of reaction is this?

2Na + 2H₂O --> 2NaOH + H₂

• Single Replacement

• Double Replacement

• Synthesis

• Decomposition

What does the symbol (aq) stand for?

• Aquatic

• Aqueous

• Aqua

• Aquarium

Use the activity series, seen in the image, to determine if the reaction will occur.

Ca + Fe₂S₃ --> ?

• Yes, the reaction will occur

• No, the reaction will not occur

• Cannot be determined

Which coefficient should be placed in front of NH₃ to balance this equation?

NH₃ + H₂SO₄ --> (NH₄)₂SO₄

• 1

• 2

• 3

• 1,000,000,000

Which coefficient should be placed in front of Lithium to balance this equation?

AlCl₃ + Li --> LiCl + Al

• 1

• 2

• 3

• 0.00000000000001

Which coefficient should be placed in front of O₂ to balance this equation?

C₂H₆ + O₂ --> H₂O + CO₂

• 3.5

• 7

• 9

• 14