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Ionic Compounds: Chemical Formula

What is the f...

Question

What is the formula of mercury oxide?

H g O

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H g_{2} O_{3}

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H g_{2} O

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H g O_{2}

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Solution

The correct option is B $H g O$
The formula of mercury oxide is $H g O$ . Mercury oxide is also written as mercury (II) oxide or mercuric oxide.

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H g O

H g O + 4 I^{-} ⟶ H g I_{4}^{2 -} + 2 {O H}^{-}

H g O \equiv 2 {O H}^{-} \equiv 2 H^{+}

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△ H_{f}^{\circ} (H g O, s) = - 90 k J m o l^{- 1}

M (H g) = 200.6 g m o l^{- 1}

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Z n (H g) + H g O_{(s)} \to Z n O_{(s)} + H g_{(l)}

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