Write the chemical formulae for:
(i) magnesium sulfite,
(ii) copper(II) oxide. - Leaving Cert Chemistry - Question d - 2020
Question d
Write the chemical formulae for:
(i) magnesium sulfite,
(ii) copper(II) oxide.
Worked Solution & Example Answer:Write the chemical formulae for:
(i) magnesium sulfite,
(ii) copper(II) oxide. - Leaving Cert Chemistry - Question d - 2020
Step 1
magnesium sulfite
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Answer
The chemical formula for magnesium sulfite is MgSO₃. This compound consists of one magnesium ion (Mg²⁺) and one sulfite ion (SO₃²⁻), resulting in MgSO₃.
Step 2
copper(II) oxide
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Answer
The chemical formula for copper(II) oxide is CuO. Copper(II) indicates that copper has a +2 oxidation state, and it combines with one oxide ion (O²⁻) to form CuO.
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