Zadania z chemii IB HL

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Which oxide will react with water to produce the most basic solution? A. Potassium oxide B. Calcium oxide C. Sulfur trioxide D. Nitrogen dioxide

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The diagram shows an outline of the periodic table in which four elements of period 3 are labelled A, B, C and D. Which element forms an amphoteric oxide? A. Element A B. Element B C. Element C D. Element D

Outline one reason why $\ce{SO2}$ is considered a pollutant.

Which oxide reacts with water to give a solution with a pH greater than 7? A. $\ce{SO2}$ B. $\ce{P4O10}$ C. $\ce{Al2O3}$ D. $\ce{Na2O}$