Question
Acid Base Solutions Quick Check
4 of 54 of 5 Items
Question
Which compound is an Arrhenius base? (1 point)
Responses
HNO3
cap h cap n cap o sub 3
Ca(OH)2
cap c A cap o cap h sub 2
H3PO4
cap h sub 3 cap p cap o sub 4
HClO
Answers
GPT-4o mini
The compound that is an Arrhenius base is **Ca(OH)₂** (calcium hydroxide).
Arrhenius bases are defined as substances that increase the concentration of hydroxide ions (OH⁻) in aqueous solution. Calcium hydroxide dissociates in water to produce Ca²⁺ and OH⁻ ions, thus qualifying as an Arrhenius base.
The other compounds listed are not Arrhenius bases:
- HNO₃ (nitric acid) is an Arrhenius acid.
- H₃PO₄ (phosphoric acid) is also an Arrhenius acid.
- HClO (hypochlorous acid) is likewise an Arrhenius acid.
Arrhenius bases are defined as substances that increase the concentration of hydroxide ions (OH⁻) in aqueous solution. Calcium hydroxide dissociates in water to produce Ca²⁺ and OH⁻ ions, thus qualifying as an Arrhenius base.
The other compounds listed are not Arrhenius bases:
- HNO₃ (nitric acid) is an Arrhenius acid.
- H₃PO₄ (phosphoric acid) is also an Arrhenius acid.
- HClO (hypochlorous acid) is likewise an Arrhenius acid.