According to the Arrhenius definition, an acid is a substance that:
AAccepts a proton (H⁺) in water
BDonates a proton (H⁺) in water
CProduces OH⁻ ions in aqueous solution
DProduces H⁺ ions (hydronium ions) in aqueous solution
Question 2
The pH of a neutral solution at 25°C is:
A0
B7
C14
D1
Question 3
Litmus paper turns red in an acid. What colour does it turn in a base?
AYellow
BGreen
CBlue
DPurple
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