What is a neutraliser?

A substance that can neutralise an acid or an alkali

A substance that can neutralise an acid only

A substance that can neutralise an alkali only

Complete the following equation: Magnesium oxide + hydrochloric acid -->

magnesium chloride + water + CO2

Which box or boxes are examples of neutralisation.

Using lemon juice to neutralise wasp stings.

Using toothpaste to neutralise mouth alkalinity

Using lemon juice to neutralise bee stings

Topic 9 - Reactions Of Acids - Quiz, Trivia & Questions

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1/11 Questions

What is a neutraliser?
- A substance that can neutralise an acid only
- A substance that can neutralise an alkali only
- A substance that can neutralise an acid or an alkali

About This Quiz

Explore the reactions of acids in 'Topic 9 - Reactions of Acids'. This quiz assesses understanding of neutralisation, salt formation, and pH changes. Key topics include reactions with sodium carbonate, magnesium oxide, and the effect of lime on soil. Essential for learners in advanced chemistry courses.

2.

Name the salt produced when sodium carbonate reacts with sulphuric acid.
- Sodium carbide
- Carbon sulphide
- Sodium sulphate
- Sodium sulphide
Correct Answer

A. Sodium sulphate

Explanation

acid + metal carbonate --> salt + water + CO2
Suphuric acid produce salts with the ending sulphate.

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3.

Complete the following equation: Magnesium oxide + hydrochloric acid -->
- Magnesium chloride + hydrogen
- Magnesium chloride + water
- Magnesium chloride + water + CO2
Correct Answer

A. Magnesium chloride + water

Explanation

metal oxide + acid --> salt + water

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4.

A salt is a substance in which the ___________ ion of the acid has been replaced by a metal (or ammonium) ion.

Correct Answer
hydrogen
H+
Hydrogen
H2

Explanation
A salt is formed when the hydrogen ion (H+) of an acid is replaced by a metal or ammonium ion. This replacement results in the formation of a new compound known as a salt. The options "hydrogen," "H+," "Hydrogen," and "H2" all refer to the hydrogen ion present in the acid. Therefore, any of these options can be used to complete the given statement correctly.

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5.

When lime is added to acidic soil, the pH will get lower.
- True
- False
Correct Answer

A. False

Explanation

If the soil is pH 4, when lime is added, the soil pH will increase towards pH 7 as the alkaline lime neutralises the acidity in the soil.

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6.

Name the gas produced when magnsium reacts with nitric acid
- Hydrogen
- Carbon dioxide
- Nitrogen
- Oxygen
Correct Answer

A. Hydrogen

Explanation

(Reactive) metal + acid --> salt + H2

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7.

How many moles of HCl acid will be used if the volume is 20 cm³ and the concentration is 0.1 mol/l.
- 0.02
- 0.002
- 2
- 0.0002
Correct Answer

A. 0.002

Explanation

n = c x v where v must be in litres, 0.1 x 20/1000 = 0.002 moles of acid

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8.

What is the average volume of acid used during the following titration.Rough titre - 25.2 cm³1st titre - 22.3 cm³2nd titre - 22.1 cm³
- 22.2
- 23.2
- 44.4
- 69.6
Correct Answer

A. 22.2

Explanation

Ignore the rough titre - average of 1st and 2nd (22.3 + 22.1 = 44.4 / 2 = 22.2)

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9.

What would be the concentration of magnesium hydroxide solution if 25 cm³ was needed to neutalise the HCl acid (conc 0.1, vol 20 cm³ ).Hint: You will need to write a balanced equation
- 0.4 mol/l
- 0.04 mol/l
- 0.08 mol/l
- 0.1 mol/l
Correct Answer

A. 0.04 mol/l

Explanation

Mg(OH)2 + 2HCl --> MgCl2 + 2H2O
2 moles HCl --> 1 mole Mg(OH)2
0.002 moles HCl -> 0.001 moles Mg(OH)2
c = n/v = 0.001/(25/1000) = 0.04 mol/l

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10.

Name the type of reaction when sodium carbonate solution is added to copper (II) sulphate solution. (You may wish to use page 5 of the data booklet).
- Neutralisation
- Addition
- Precipitation
- Oxidation
Correct Answer

A. Precipitation

Explanation

Na2CO3(aq) + CuSO4(aq) --> CuCO3(s) + Na2SO4(aq)

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11.

Which box or boxes are examples of neutralisation.
- Adding lime to acidic soil
- Using toothpaste to neutralise mouth alkalinity
- Using lemon juice to neutralise bee stings
- Using lemon juice to neutralise wasp stings.
Correct Answer(s)

A. Adding lime to acidic soil
A. Using lemon juice to neutralise wasp stings.

Explanation

lime (calcium hydroxide - not the fruit) is an alkali, so will neutralise acidic soil. Lemon juice is acidic so will only neutralise alkaline wasp stings, (bee stings as they are acidic). The pH of the mouth is acidic not alkaline.

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Mar 22, 2023

Quiz Edited by
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Dec 06, 2010

Quiz Created by
Lslater

Topic 9 - Reactions Of Acids

What is a neutraliser?

Quiz Preview

Name the salt produced when sodium carbonate reacts with sulphuric acid.

Complete the following equation: Magnesium oxide + hydrochloric acid -->

A salt is a substance in which the ___________ ion of the acid has been replaced by a metal (or ammonium) ion.

When lime is added to acidic soil, the pH will get lower.

Name the gas produced when magnsium reacts with nitric acid

How many moles of HCl acid will be used if the volume is 20 cm3 and the concentration is 0.1 mol/l.

What is the average volume of acid used during the following titration.Rough titre - 25.2 cm31st titre - 22.3 cm32nd titre - 22.1 cm3

What would be the concentration of magnesium hydroxide solution if 25 cm3 was needed to neutalise the HCl acid (conc 0.1, vol 20 cm3 ).Hint: You will need to write a balanced equation

Name the type of reaction when sodium carbonate solution is added to copper (II) sulphate solution. (You may wish to use page 5 of the data booklet).

Which box or boxes are examples of neutralisation.

How many moles of HCl acid will be used if the volume is 20 cm³ and the concentration is 0.1 mol/l.

What is the average volume of acid used during the following titration.Rough titre - 25.2 cm³1st titre - 22.3 cm³2nd titre - 22.1 cm³

What would be the concentration of magnesium hydroxide solution if 25 cm³ was needed to neutalise the HCl acid (conc 0.1, vol 20 cm³ ).Hint: You will need to write a balanced equation