EST Practice

Acid can react with elements or compounds to make salt. In the options below, which is impossible to produce salt?

• hydrogen

• iron

• copper oxide

• calcium carbonate

Find the spectator ions for this equation:

Ca(OH)_{2 (aq)} + H₂SO_{4 (aq)} ---> CaSO_{4 (s)} + H₂O _(aq)

• Ca²⁺ ; OH^-

• H⁺ ; SO₄^2-

• Ca²⁺ ; SO₄^2-

• H⁺ ; OH^-

Lithium + A ---> Lithium Chloride + B

• A: Hydrochloric acid

  B: Water

• A: Hydrochloric acid

  B: Hydrogen

• A: Sulfuric acid

  B: Water

• A: Sulfuric acid

  B: Hydrogen

Which of the following is the best pair of reagents for preparing sodium sulfate?

• sodium carbonate and hydrochloric acid

• sodium oxide and sulfuric acid

• sodium nitrate and hydrochloric acid

• sodium hydroxide and water

The salt product after reaction from magnesium carbonate and nitric acid is ...(X)... and this is ...(Y)... salt.

• X: magnesium chloride

  Y: insoluble

• X: magnesium sulfate

  Y: insoluble

• X: magnesium nitrate

  Y: soluble

• X: magnesium chloride

  Y: soluble

How to prepare a soluble salt? Find the correct option!

• Drying-Filtering-Evaporating

• Filtering-Evaporating-Drying

• Evaporating-Drying-Filtering

• Filtering-Drying-Evaporating

What are the possible reagents to prepare an insoluble salt?

• lead (II) nitrate and sodium sulfate

• sodium hydroxide and sulfuric acid

• calcium oxide and water

• silver carbonate and hydrogen

Find the ionic equation from the reaction below:

AgNO_{3 (aq)} + HCl _(aq) ---> AgCl _(s) + HNO_{3 (aq)}

• Ag⁺ + NO₃^- ---> AgNO₃

• H⁺ + Cl^- ---> HCl

• Ag⁺ + Cl^- ---> AgCl

• H⁺ + NO₃^- ---> HNO₃

The options below are the most possible method to prepare a soluble salt, except ...

• acid + soluble base

• acid + metal

• acid + insoluble carbonate

• soluble salt (cation) + soluble salt (anion)

Please arrange the correct process to prepare an insoluble salt!

• 1-2-3-4

• 2-1-3-4

• 4-1-2-3

• 3-1-2-4