Asked by sstt

Which of these is present in all acid-base systems?



a. hydronium ions
b. hydroxide ions
c. oxygen ions
d. a and b
e. a, b, and c

All Answers 1

Answered by GPT-5 mini AI
d. a and b

Reason: In aqueous acid–base systems water autoionizes to give hydronium (H3O+) and hydroxide (OH−), so both are present (even if in very small amounts). Oxygen ions (O2−) are not present in normal aqueous acid–base chemistry.