Question 1

Which of the following compounds is a strong electrolyte when dissolved in water?

Accepted Answer

NaCl

Question 2

Which of the following is the correct net ionic equation for the reaction between HCl (aq) and KOH (aq)?

Accepted Answer

$$\mathrm{H^+ (aq) + OH^- (aq) \rightarrow H_2O (l)}$$

Question 3

Which of the following statements best describes a weak electrolyte?

Accepted Answer

A compound that dissociates partially in water and conducts electricity weakly.

Question 4

Which of the following ionic compounds is insoluble in water according to the solubility rules?

Accepted Answer

BaSO4

Question 5

A student mixes solutions of Pb(NO3)2 and KBr. What is the net ionic equation for the reaction that occurs?

Accepted Answer

$$\mathrm{Pb$$^{2+}$$ (aq) + 2Br^- (aq) \rightarrow $$PbBr_2$$ (s)}$$

Question 6

Which of the following acids is diprotic and a strong acid?

Accepted Answer

H2SO4

Question 7

Which of the following is a correct molecular equation for a precipitation reaction?

Accepted Answer

$$\mathrm{2AgNO_3 (aq) + Na_2SO_4 (aq) \rightarrow Ag_2SO_4 (s) + 2NaNO_3 (aq)}$$

Question 8

Which of the following compounds will NOT conduct electricity when dissolved in water?

Accepted Answer

C2H5OH

Question 9

Which of the following is the correct net ionic equation for the neutralization of HF (aq) with LiOH (aq)?

Accepted Answer

$$\mathrm{HF (aq) + OH^- (aq) \rightarrow F^- (aq) + H_2O (l)}$$

Question 10

Which of the following statements about solubility is correct?

Accepted Answer

Solubility is the maximum amount of solute that will dissolve in a given quantity of solvent at a given temperature.

Question 11

Which of the following is a triprotic acid?

Accepted Answer

H3PO4

Question 12

A solution of acetic acid (CH3COOH) in water is classified as:

Accepted Answer

A weak electrolyte

Question 13

Which of the following is the correct balanced molecular equation for the combustion of octane ($$\mathrm{C_8H_{18}}$$)?

Accepted Answer

$$\mathrm{2C_8H_{18} (l) + 25O_2 (g) \rightarrow 16CO_2 (g) + 18H_2O (g)}$$

Question 14

Which of the following is a correct net ionic equation for a precipitation reaction?

Accepted Answer

$$\mathrm{CO_3$^{2-} (aq) + Ca$$^{2+}$$ (aq) \rightarrow $$CaCO_3$$ (s)}$$

Question 15

Which of the following is a property of bases according to the Arrhenius definition?

Accepted Answer

Bases ionize in water to produce $$\mathrm{OH^-}$$ ions.

Question 16

Which of the following is a correct net ionic equation for the neutralization of HNO2 (aq) with RbOH (aq)?

Accepted Answer

$$\mathrm{$$HNO_2$$ (aq) + OH^- (aq) \rightarrow NO_2$^- (aq) + H_2O (l)}$$

Question 17

Which of the following is a correct example of a Brønsted base?

Accepted Answer

NH3 accepting a proton from H2O to form NH4+

Question 18

Which of the following compounds is soluble in water according to the solubility rules?

Accepted Answer

Na2SO4

Question 19

Which of the following is the correct ionic equation for the reaction between MgCl2 (aq) and AgNO3 (aq)?

Accepted Answer

$$\mathrm{Mg$$^{2+}$$ (aq) + 2Cl^- (aq) + 2Ag^+ (aq) + 2NO_3^- (aq) \rightarrow Mg$$^{2+}$$ (aq) + 2NO_3^- (aq) + 2AgCl (s)}$$

chapter 4 lec 1

Guida di studio - Domande di pratica