Q: Which is the correct net ionic equation for the reaction between $$\text{AgNO}_3(aq)$$ and $$\text{NaI}(aq)$$?

$$\text{Ag}^+(aq) + \text{I}^-(aq) \rightarrow \text{AgI}(s)$$

Q: What is the net ionic equation for the neutralization of hydrochloric acid with sodium hydroxide?

$$\text{H}^+(aq) + \text{OH}^-(aq) \rightarrow \text{H}_2\text{O}(l)$$

Q: Which of the following is the correct balanced equation for the combustion of triethylene glycol, $$\text{C}_6\text{H}_{14}\text{O}_4$$?

$$2 \text{C}_6\text{H}_{14}\text{O}_4(l) + 15 \text{O}_2(g) \rightarrow 12 \text{CO}_2(g) + 14 \text{H}_2\text{O}(l)$$

Question 1

Which of the following observations is NOT typically considered evidence of a chemical reaction?

Accepted Answer

A change in the physical state from solid to liquid due to melting

Question 2

Given the reaction $$2 	ext{NO}(g) + 	ext{O}_2(g) ightarrow 2 	ext{NO}_2(g)$$, what is the correct mole ratio of $$	ext{NO} to$$ $$	ext{O}_2$$?

Accepted Answer

$$2:1$$

Question 3

Which of the following best describes the limiting reactant in a chemical reaction?

Accepted Answer

The reactant that is completely consumed first

Question 4

A solution is prepared by dissolving $$0.440$$ mol of urea in enough water to make $$1.000 L of $$solution. What is the molarity of the solution?

Accepted Answer

$$0.440 M$$

Question 5

Which equation correctly relates the initial and final concentrations and volumes when diluting a solution?

Accepted Answer

$$M_i V_i = M_f V_f$$

Question 6

In the reaction $$2 	ext{Al}(s) + 6 	ext{HCl}(aq) ightarrow 2 	ext{AlCl}_3(aq) + 3 	ext{H}_2(g)$$, how many moles of $$	ext{H}_2$$ are produced from $$4$$ moles of $$	ext{Al}$$?

Accepted Answer

$$6$$ moles

Question 7

Which of the following is a strong electrolyte in aqueous solution?

Accepted Answer

$$	ext{MgCl}_2$$

Question 8

Which of the following compounds will form a precipitate when mixed with an aqueous solution of $$	ext{AgNO}_3$$?

Accepted Answer

$$	ext{NaCl}$$

Question 9

Which is the correct net ionic equation for the reaction between $$	ext{AgNO}_3(aq)$$ and $$	ext{NaI}(aq)$$?

Accepted Answer

$$	ext{Ag}^+(aq) + 	ext{I}^-(aq) ightarrow 	ext{AgI}(s)$$

Question 10

Which of the following is a correct statement about acids and bases according to the Brønsted-Lowry definition?

Accepted Answer

Acids are proton donors and bases are proton acceptors.

Question 11

What is the net ionic equation for the neutralization of hydrochloric acid with sodium hydroxide?

Accepted Answer

$$	ext{H}^+(aq) + 	ext{OH}^-(aq) ightarrow 	ext{H}_2	ext{O}(l)$$

Question 12

Which of the following is true for a redox reaction?

Accepted Answer

Reduction is the gain of electrons.

Question 13

In the reaction $$	ext{Fe}_2	ext{O}_3(s) + 3	ext{CO}(g) ightarrow 2	ext{Fe}(l) + 3	ext{CO}_2(g)$$, which species is reduced?

Accepted Answer

$$	ext{Fe}_2	ext{O}_3$$

Question 14

A $$25.0 mL $$sample of $$0.250 M$$ $$	ext{K}_2	ext{CrO}_4 is $$required for a reaction. How many grams of $$	ext{K}_2	ext{CrO}_4$$ are needed? (Molar mass = $$194.2 g/$$mol)

Accepted Answer

$$1.21 g$$

Question 15

Which of the following best describes a strong acid in aqueous solution?

Accepted Answer

It completely ionizes in water.

Question 16

What is the percent yield if the theoretical yield of a reaction is $$10.0 g $$and the actual yield is $$7.5 g$$?

Accepted Answer

$$75\%$$

Question 17

Which of the following is the correct balanced equation for the combustion of triethylene glycol, $$	ext{C}_6	ext{H}_{14}	ext{O}_4$$?

Accepted Answer

$$2 	ext{C}_6	ext{H}_{14}	ext{O}_4(l) + 15 	ext{O}_2(g) ightarrow 12 	ext{CO}_2(g) + 14 	ext{H}_2	ext{O}(l)$$

Question 18

Which of the following is a correct statement about oxidizing and reducing agents?

Accepted Answer

The oxidizing agent is reduced during the reaction.

Question 19

A $$10.0 mL $$sample of $$0.0100 M$$ $$	ext{K}_2	ext{CrO}_4 is $$diluted to $$250.0 mL. $$What is the final concentration?

Accepted Answer

$$0.000400 M$$

Comprehensive Study Notes: Chemical Reactions and Reactions in Aqueous Solutions

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