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What happens when vanadium dioxide reacts with an acid?

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Vanadium dioxide ( $V O_{2}$ ) is an amphoteric oxide, meaning it possesses the ability to behave as either an acid or a base depending on the environment. Because of this property, it is capable of dissolving in acidic solutions. When vanadium dioxide reacts with an acid, it dissolves to produce the blue vanadyl ion, denoted as $[V O]^{2 +}$ .1