Ionic equations: salt formation

Quiz by Oak National Academy: GCSE Combined Science Edexcel Higher

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6 questions

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Q1
What does the subscript number 4 in H $_2$ SO $_4$ represent?
4 molecules of sulfuric acid
4 atoms of sulfur and 4 atoms of oxygen
4 atoms of oxygen
4 atoms of sulfur
30s
Q2
5Al $_2$ (SO $_4$ ) $_3$ is written down as part of a balanced chemical equation. Which number is the coefficient?
the 5
the 2
the 4
the 3
30s
Q3
Potassium iodide can be represented as KI $_{(aq)}$ in a chemical equation. What does $_{(aq)}$ tell us about the potassium iodide?
It can dissolve in water.
It is water.
It contains water.
It is dissolved in water.
30s
Q4
In a solution there may be several types of ions, of which some react together and others do not. What is the name of the ions that stay in solution and do not react?
dissolved ions
spectator ions
observer ions
passive ions
30s
Q5
What is the correct ionic equation for the formation of barium sulfate?
Ba²⁺ (aq) + SO₄²⁻ (aq) → BaSO₄ (s)
barium chloride + sodium sulfate → barium sulfate + sodium chloride
BaCl₂ (aq) + Na₂SO₄ (aq) → BaSO₄ (s) + 2NaCl (aq)
Ba²⁺(aq)+2Cl⁻(aq)+2Na⁺(aq)+SO₄²⁻(aq) → Ba²⁺(aq)+SO₄²⁻(aq)+2Na⁺(aq)+2Cl⁻(aq)
H⁺ (aq) + OH⁻ (aq) → H₂O (l)
30s
Q6
Which ions react in the neutralisation reaction between sulfuric acid and potassium hydroxide?
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