Acid Base and titrations

Which compound represents an acid?

• NaOH

• HCl 

• CH₂OH

• NaCl

Which compound represents an base?

• NaOH

• HCl 

• CH₂OH

• NaCl

According to the alternate acid base theory, a compound is a base if it

• donates a hydrogen ion

• accepts a hydrogen ion

• donates a hydroxide ion

• accepts a hydroxide ion

According to the alternate acid base theory, a compound is an acid if it

• donates a hydrogen ion

• accepts a hydrogen ion

• donates a hydroxide ion

• accepts a hydroxide ion

Which of the compounds below is an electrolyte?

• LiCl

• CH₄

• CH₃OH

• Na

Which of the compounds below is an electrolyte?

• Li

• CH₄

• CH₃OH

• NaOH

Which represents a hydroxide ion?

• H⁺

• OH^-

• Na⁺

• Cl^-

What is an Arrhenius acid?

• A substance that produces H+ in water.

• A substance that produces OH- in water.

Answer explanation

An Arrhenius acid has a H in the beginning of its formula and produces H+ in water.

Tags

HS-PS1-B

A student tests an unknown aqueous solution and finds it conducts electricity and turns litmus paper blue. What can the student infer?

• The solution contains an acid.

• The solution contains a base.

• The solutions is neutral.

Answer explanation

Basic solutions conduct electricity and turn litmus paper blue.

Tags

HS-PS1-B

​ (a)   conduct electricity and turn litmus paper red.

• Acids
• Bases
• Neutral solutions
• Salts

Answer explanation

Acidic solutions conduct electricity and turn litmus paper red.

Tags

HS-PS1-B

hsps1b