I. is a white powder
II. reacts with HCl.
III. reacts with NaOH
IV. is insoluble in water

A. alkaline
B. amphoteric
C. acidic
D. neutral

Correct Answer:

Option B – amphoteric


An amphoteric oxide is an oxide that can act as either an acid or base in a reaction to produce a salt and water.

SEE ALSO  Calculate the mass of sodium hydroxide in 5.00 dm³ of a 0.125 mol dm‾³ solution [NaOH = 40 g mol]

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