Test: GRE Subject Test: Chemistry

1.

A researcher has substance X and substance Y. After performing several tests, he finds out that substance X is a metal oxide and substance Y is a non-metal oxide. is  What will the researcher observe when he measures the pH of each oxide in aqueous solutions of equal concentrations?

Both oxides will have a pH greater than 7

Substance Y will have a lower pH because non-metals produce acidic oxides

The pH will be 7 because metal and non-metal oxides are products of a neutralization reaction

Substance X will have a lower pH because metals produce acidic oxides

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