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8 - Acids,Bases & Salts

Question 1 of 210 correct · 0 wrong

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✅EvaluateQuestion 1 of 21

An acid is best described as a substance that

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✅EvaluateQuestion 2 of 21

Which household liquid will turn blue litmus paper red?

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✅EvaluateQuestion 3 of 21

Which pair of reactants produces only salt and water on reaction?

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✅EvaluateQuestion 4 of 21

Which compound is an alkali?

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✅EvaluateQuestion 5 of 21

Which oxide is acidic?

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✅EvaluateQuestion 6 of 21

A sting from a fire-ant (methanoic acid) on the skin is soothed using

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✅EvaluateQuestion 7 of 21

Which test confirms carbon dioxide gas?

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✅EvaluateQuestion 8 of 21

Which balanced equation shows the reaction of calcium carbonate with dilute hydrochloric acid?

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✅EvaluateQuestion 9 of 21

For titrating a weak acid (ethanoic acid) with a strong base (NaOH), the best indicator is

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✅EvaluateQuestion 10 of 21

Four 0.10 mol dm⁻³ solutions are prepared: HCl, CH₃COOH, NH₃(aq) and NaOH. Which list shows increasing pH?

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✅EvaluateQuestion 11 of 21

Which is the correct net ionic equation for a neutralisation reaction?

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✅EvaluateQuestion 12 of 21

To prepare crystals of copper(II) sulfate using copper(II) oxide and dilute sulfuric acid, which sequence is correct?

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✅EvaluateQuestion 13 of 21

Which pair of solutions forms a precipitate when mixed?

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✅EvaluateQuestion 14 of 21

In a sugar factory, lime is added to clarify cane juice. The alkalinity is due mainly to

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✅EvaluateQuestion 15 of 21

25.0 cm³ of 0.200 mol dm⁻³ NaOH neutralises 20.0 cm³ of H₂SO₄. What is the concentration of the acid?

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✅EvaluateQuestion 16 of 21

Which net ionic equation represents the reaction between carbonate ions and acid?

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✅EvaluateQuestion 17 of 21

A strong acid solution is diluted ten-fold with water. Which statement is correct?

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✅EvaluateQuestion 18 of 21

A 500 mg antacid tablet contains pure CaCO₃. Approximate moles of H⁺ it can neutralise are

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✅EvaluateQuestion 19 of 21

Which is the best route to obtain pure crystals of sodium chloride from HCl and NaOH?

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✅EvaluateQuestion 20 of 21

Which oxide best demonstrates amphoteric behaviour?

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✅EvaluateQuestion 21 of 21

10.0 cm³ of 0.200 mol dm⁻³ H₂SO₄ is diluted with 50.0 cm³ water, then 20.0 cm³ of 0.200 mol dm⁻³ NaOH is added. The final solution is

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✅EvaluateQuestion 1 of 21

An acid is best described as a substance that

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