Chemical Reactions

Question 1

Balance the following chemical equation:

CH4 + Cl2 → CCl4 + HCl

Answer 1

CH4 + 4 Cl2 → CCl4 + 4 HCl

Question 2

Which type of chemical reaction is demonstrated by the reaction below?

Ba(NO3)2 + Na2SO4 → BaSO4 + 2 NaNO3

Answer 2

Double replacement.

Question 3

Which of the following compounds contains ionic bonds?

Answer 3

NaBr

Question 4

In a redox reaction, oxidation is the _____ of electrons and reduction is the _____ of electrons.

Answer 4

loss, gain

Question 5

Which of these statements is true about pH?

Answer 5

A pH of 6 is more acidic than a pH of 8.

Question 6

The same single-replacement reaction is run in two different beakers. The beakers are labeled as Beaker A and B and are heated to 75oC and 100oC, respectively. If the reactions are run for 15 minutes each, which of the following results would you expect to observe?

Answer 6

Beaker B produces more product than Beaker A.

Question 7

Balance the following chemical equation:

C3H8 + O2 → CO2 + H2O

Answer 7

C3H8 + 5 O2 → 3 CO2 + 4 H2O

Question 8

Br2 is classified as which of the following?

Answer 8

Molecule.

Question 9

Predict the missing product of the following reaction:

Zn + 2AgNO3 → 2Ag + _____

Answer 9

Zinc nitrate.

Question 10

Correctly identify X in the reaction below:

210⁄84 Po → X + 4⁄2 He

Answer 10

206/82 Pb

Question 11

How many moles of O2 will be produced when the reaction below is properly balanced?

Answer 11

1 mole.

Question 12

Which of the following is an example of a redox reaction?

Answer 12

Combustion.

Question 13

Identify the acid in the following reaction:

CH3COOH + NaOH → NaOOCCH3 + H2O

Answer 13

CH3COOH

Question 14

Which of the following are produced from the reaction between a Brønsted-Lowry acid-base pair?

Answer 14

A salt and water.

Question 15

Which of the following scenarios will increase the likelihood of reactant molecules colliding with one another during a liquid chemical reaction?

Answer 15

Increasing the reaction concentration.