AP Chemistry Chapter 4 Zumdahl

An unknown substance dissolve readily in water but not in Benzene (a non polar solvent). Molecules of what type are present in the substance?

• neither polar nor nonpolar

• polar

• either polar or nonpolar

• nonpolar

• none of these

Which of the following is a strong acid?

• HF

• KOH

• HClO₄

• HClO

• HBrO

All of these following are week acids EXCEPT

• HCNO

• HBr

• HF

• HNO₂

• HCN

Tags

NGSS.HS-PS1-1

Which of the following is paired incorrectly?

• HI - strong acid

• HNO₃ - weak acid

• Ba(OH)₂ - strong base

• HBr - strong acid

• NH₃ - weak acid

Tags

NGSS.HS-PS1-1

The interaction between solute particles and water molecules, which tends to cause a salt to fall apart in water, is called

• hydration

• polarization

• dispersion

• coagulation

• conductivity

Consider two organic molecules, ethanol and benzene. One dissolves in water and the other does not. Why?

• They have different molar masses.

• One is ionic, the other is not

• One is an electrolyte, the other is not

• Ethanol contains a polar (O-H) bond, and benzene does not

• Two of these

The concentration of a salt water solution which sits in an open beaker decreases over time.

• True

• False

The scientist who discovered the essential nature of acids through solution conductivity studies is

• Priesly

• Boyle

• Einstein

• Mendeleev

• Arrhenius

What are the spectator ions in this reaction?
CuCl₂(aq) + NaOH(aq) → Cu(OH)₂(s) + NaCl(aq)
 

• Cu²⁺ and OH^1-
• Na²⁺ and Cl^2-
• Na¹⁺ and Cl^1-
• Na¹⁺ and OH^1-

Which of the following does NOT form a precipitate?

• AgNO₃(aq) + 2KBr(aq) →
• LiNO_3 (aq) + NaC₂H₃O₂(aq) →
• Ca(NO₃)₂(aq) + K₂CO₃(aq) →
•  Ba(NO₃)_{2 (aq)} + Na₂SO_4(aq) →