Precipitation Reactions

Chemistry ⇒ Chemical Reactions and Equations

Precipitation Reactions starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Precipitation Reactions. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 10

A student adds Na₂SO₄ to a solution of Ba(NO₃)₂ and observes a white precipitate. Name the precipitate and write its chemical formula.

A student mixes 50 mL of 0.1 M AgNO₃ with 50 mL of 0.1 M NaCl. Calculate the mass of AgCl precipitate formed. (Molar mass of AgCl = 143.5 g/mol)

A student mixes solutions of calcium chloride and sodium carbonate. What is the precipitate formed?

Describe the role of solubility rules in predicting precipitation reactions.

Describe the steps to predict whether a precipitate will form when two aqueous solutions are mixed.

Describe what is meant by the term 'insoluble' in the context of precipitation reactions.

Explain why AgNO₃ is often used to test for the presence of chloride ions in a solution.

Explain why mixing solutions of potassium nitrate and sodium chloride does not result in a precipitation reaction.

Explain why no precipitate forms when solutions of sodium chloride and potassium nitrate are mixed.

Explain why the reaction between NaCl(aq) and KNO₃(aq) does not result in a precipitate.

What is a precipitation reaction?

What is the color of the precipitate formed when lead(II) nitrate reacts with potassium iodide?

What is the precipitate formed when solutions of iron(III) chloride and sodium hydroxide are mixed?

Write the balanced chemical equation for the precipitation reaction between sodium sulfate and barium chloride.

Write the balanced chemical equation for the reaction between lead(II) nitrate and potassium iodide.

A chemist adds a solution of potassium chromate to a solution of silver nitrate. What is the color of the precipitate formed, and what is its chemical formula?

A laboratory technician has four colorless solutions: Na₂CO₃, BaCl₂, KNO₃, and AgNO₃. Describe a procedure using only these solutions to identify which one is BaCl₂.

A student mixes 100 mL of 0.2 M calcium nitrate solution with 100 mL of 0.2 M sodium phosphate solution. Calculate the maximum mass of calcium phosphate (Ca₃(PO₄)₂) that can be formed. (Molar mass of Ca₃(PO₄)₂ = 310 g/mol)

Explain, with reference to solubility rules, why a precipitate forms when solutions of lead(II) nitrate and sodium sulfate are mixed, but not when solutions of sodium nitrate and potassium sulfate are mixed.

When a solution of iron(II) sulfate is mixed with sodium hydroxide, a green precipitate forms. Write the balanced net ionic equation for this reaction.