(a) Solutions of soluble salts can react together to form an insoluble salt. What name is given to this type of reaction? Put a cross (✗) in the box next to your answer. A combustion B neutralisation C precipitation D separation (b) Information about the solubility of some salts is given below. - all nitrates are soluble - all common carbonates are insoluble except sodium carbonate, potassium carbonate and ammonium carbonate. Copper carbonate can be made by reacting together solutions of sodium carbonate and copper nitrate. Complete this equation by filling in the missing state symbols. sodium carbonate (aq) + copper nitrate (aq) → copper carbonate (_______) + sodium nitrate (_______) (c) The symbol for a copper ion is Cu²⁺. The symbol for a carbonate ion is CO₃²⁻. Write the formula for copper carbonate. (d) In an experiment, solid lead iodide is produced in a mixture with a solution of a soluble salt. Describe how a pure, dry sample of solid lead iodide can be obtained from this mixture. (e) Two tests were carried out to identify the ions in salt X. (i) Test: flame test on solid salt X. Result: lilac flame. Identify the ion in salt X that gives the lilac flame. ion in salt X: (ii) Test: addition of dilute nitric acid and silver nitrate solution to a solution of salt X. Identify the ion in salt X that produces the white solid.

GCSE Edexcel Chemistry Making insoluble salts: (a) Solutions of soluble salts c

(a) Solutions of soluble salts can react together to form an insoluble salt - Edexcel - GCSE Chemistry - Question 3 - 2014 - Paper 1

Question 3

(a) Solutions of soluble salts can react together to form an insoluble salt. What name is given to this type of reaction? Put a cross (✗) in the box next to your ans... show full transcript

Worked Solution & Example Answer:(a) Solutions of soluble salts can react together to form an insoluble salt - Edexcel - GCSE Chemistry - Question 3 - 2014 - Paper 1

Step 1

What name is given to this type of reaction?

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Answer

The name given to this type of reaction is C precipitation.

Step 2

Complete this equation by filling in the missing state symbols.

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Answer

The missing state symbols are (s) for copper carbonate and (aq) for sodium nitrate. Thus the completed equation is:

ext{sodium carbonate} ext{ (aq)} + ext{copper nitrate (aq)} ightarrow ext{copper carbonate (s)} + ext{sodium nitrate (aq)}

Step 3

Write the formula for copper carbonate.

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Answer

The formula for copper carbonate is CuCO₃.

Step 4

Describe how a pure, dry sample of solid lead iodide can be obtained from this mixture.

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Answer

To obtain a pure, dry sample of lead iodide from the mixture, follow these steps:

Filter the mixture: Use filter paper and a funnel to separate the solid lead iodide from the liquid.
Wash the precipitate: Rinse the solid lead iodide on the filter paper with distilled water to remove impurities.
Dry the solid: Leave the lead iodide to dry completely.

This will give you a pure, dry sample of lead iodide.

Step 5

Identify the ion in salt X that gives the lilac flame.

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Answer

The ion in salt X that gives the lilac flame is potassium (K⁺).

Step 6

Identify the ion in salt X that produces the white solid.

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Answer

The ion in salt X that produces the white solid is chloride (Cl⁻).

(a) Solutions of soluble salts can react together to form an insoluble salt - Edexcel - GCSE Chemistry - Question 3 - 2014 - Paper 1

Worked Solution & Example Answer:(a) Solutions of soluble salts can react together to form an insoluble salt - Edexcel - GCSE Chemistry - Question 3 - 2014 - Paper 1

What name is given to this type of reaction?

Complete this equation by filling in the missing state symbols.

Write the formula for copper carbonate.

Describe how a pure, dry sample of solid lead iodide can be obtained from this mixture.

Identify the ion in salt X that gives the lilac flame.

Identify the ion in salt X that produces the white solid.

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