Preparing soluble salts by acid reactions

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Salts from acid with alkali or metal

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Bushra Meraj

Oman

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Froggy Jumps Preparing soluble salts by acid reactionsOnline version Salts from acid with alkali or metal by Bushra Meraj 1 What salt is formed when HCl reacts with NaOH in a titration? a Na2SO4 b NaCl c NaClO 2 What is the role of an indicator in the titration when producing a soluble salt? a To dissolve the solid salt b To speed up the reaction c To identify the end point of neutralisation 3 Which observation marks the end point in a strong acid–alkali titration for salt preparation? a Fizzing/bubbling stops b Formation of a precipitate c Color change of the indicator 4 How is the salt finally isolated after titration with an alkali? a Filter the solution only b Evaporate the solution to crystallisation c Wash the solution with water 5 If an excess of metal reacts with an acid to form a salt, how is the salt obtained? a Use distillation to isolate salt b Directly pour away the metal c Filter and crystallise from the soluble salt solution 6 Which of the following reactions represents salt formation with an excess metal? a Acid + metal → salt + hydrogen b Metal oxide + acid → salt + water c Salt + water → acid 7 Which metal is typically used to prepare a soluble salt by reaction with hydrochloric acid in a lab example? a Copper b Zinc c Gold 8 In preparing soluble salts, why is excess metal sometimes used? a To avoid needing filtration b To ensure complete reaction with the acid c To speed up crystallisation 9 What purification step follows salt crystallisation from solution? a Boil off solvent completely b Dry and store the salt c Add more acid 10 When preparing salts by titration, what is a key safety practice? a Igniting the solution b Careful measurement to avoid spills and splashes c Mixing with strong oxidisers

Froggy Jumps

Preparing soluble salts by acid reactionsOnline version

Salts from acid with alkali or metal

by Bushra Meraj

What salt is formed when HCl reacts with NaOH in a titration?

Na2SO4

NaCl

NaClO

What is the role of an indicator in the titration when producing a soluble salt?

To dissolve the solid salt

To speed up the reaction

To identify the end point of neutralisation

Which observation marks the end point in a strong acid–alkali titration for salt preparation?

Fizzing/bubbling stops

Formation of a precipitate

Color change of the indicator

How is the salt finally isolated after titration with an alkali?

Filter the solution only

Evaporate the solution to crystallisation

Wash the solution with water

If an excess of metal reacts with an acid to form a salt, how is the salt obtained?

Use distillation to isolate salt

Directly pour away the metal

Filter and crystallise from the soluble salt solution

Which of the following reactions represents salt formation with an excess metal?

Acid + metal → salt + hydrogen

Metal oxide + acid → salt + water

Salt + water → acid

Which metal is typically used to prepare a soluble salt by reaction with hydrochloric acid in a lab example?

Copper

Zinc

Gold

In preparing soluble salts, why is excess metal sometimes used?

To avoid needing filtration

To ensure complete reaction with the acid

To speed up crystallisation

What purification step follows salt crystallisation from solution?

Boil off solvent completely

Dry and store the salt

Add more acid

When preparing salts by titration, what is a key safety practice?

Igniting the solution

Careful measurement to avoid spills and splashes

Mixing with strong oxidisers

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Preparing soluble salts by acid reactions

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Preparing soluble salts by acid reactionsOnline version

by Bushra Meraj

What salt is formed when HCl reacts with NaOH in a titration?

What is the role of an indicator in the titration when producing a soluble salt?

Which observation marks the end point in a strong acid–alkali titration for salt preparation?

How is the salt finally isolated after titration with an alkali?

If an excess of metal reacts with an acid to form a salt, how is the salt obtained?

Which of the following reactions represents salt formation with an excess metal?

Which metal is typically used to prepare a soluble salt by reaction with hydrochloric acid in a lab example?

In preparing soluble salts, why is excess metal sometimes used?

What purification step follows salt crystallisation from solution?

When preparing salts by titration, what is a key safety practice?

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