Basic Chemical Formula

What is the formula of the following compound?

Ammonium sulphate

• NH₃SO₄

• (NH₃)₂SO₄

• NH₄SO₄

• (NH₄)₂SO₄

What is the formula of the following compound?

Sodium carbonate

• NaCO₃

• Na₂CO₃

• Na(Co₃)₂

• Na₂Co₃

What is the formula of the following compound?

Calcium carbonate

• CaCO₃

• Ca₂CO₃

• Ca(Ca₃)₂

• Ca₂Ca₃

What is the formula of the following compound?

Magnesium nitrate

• MaNi₃

• Ma(Ni₃)₂

• Mg(NO₃)₂

• MgNO₃

What is the formula of the following compound?

Potassium manganate(VII)

• KMnO₄

• K₂MnO₄

• K(MaO₄)₂

• K(MnO)₄

What is the formula of the following compound?

Potassium dichromate(VI)

• KCr₂O₇

• K₂Cr₂O₇

• K₂(Cr₂O₇)₂

• K₃Cr₂O₇

What is the formula of the following compound?

Sulphuric acid

• HSO₄

• H(SO₄)₂

• H₂SO₄

• H₃SO₄

What is the formula of the following compound?

Nitric acid

• H₂NO₂

• HNO₂

• H₂NO₃

• HNO₃

What is the chemical Equation of the following reaction?

Zinc metal react with copper(II) sulphate

• 2Zn + Cu₂SO₄ → Zn₂SO₄ + 2Cu

• Zn + CuSO₄ → ZnSO₄ + Cu

• Zn + Cu(SO₄)₂→ Zn(SO₄)₂ + Cu

• Zn₂ + Cu₂SO₄ → Zn₂SO₄ + Cu₂

What is the formula of the following compound?

Iron(II) hydroxide

• Fe₂OH

• FeOH

• Fe(OH)₂

• FeOH₂