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Flashcards in Acids & Alkalis Deck (17):
1

And alkali is a base which dissolves in ......?

Water

2

Which ions makes solutions acidic?

H+ ions make solutions acidic

3

What is the reaction called between acids and bases?

Neutralisation

4

What is the word equation for neutralisation?

Acid + Base --> Salt + Water

5

What is the symbol equation for neutralisation in terms of H+ and OH- ions?

H+ + OH- --> H2O

6

What is the word equation when metals react with acids to give salts?

Acid + Metal -> Salt + Hydrogen

7

Why doesn't copper react with dilutes acid's?

Because it's less reactive than hydrogen

8

What are the two word equations for neutralisation reactions
(Metal oxide)
(Metal hydroxide)

Acid + Metal oxide -> Salt + Water

Acid + Metal -> Salt+ Water
Hydroxide

9

What can you use of the salt you want to make is insoluble?

You can use a precipitation reaction

10

How are precipitation reactions are used with water?

Precipitation reactions can be used to remove poisonous ions such as lead from drinking water

11

What name is given to the type of reaction in which an acid reacts with the base?

Neutralisation

12

Which two substances are formed when an acid reacts with a metal such as Zinc?

A salt and hydrogen gas

13

Which two substances are formed when nitric acid reacts with carbon oxide?

Copper nitrate and water

14

Explain what you would do to make a dry sample of a soluble salt from an insoluble base

Add the insoluble base to an acid until the acid is neutralised and the Excess base can be seen on the bottom of the flask. Then filter out the excess base and evaporate off the water to leave a pure dry sample

15

Write down the word equation for the precipitation reaction between barium chloride and sodium sulphate

Barium chloride + sodium sulphate --> barium sulfate + Sodium chloride

16

Outline the steps needed to give a pure dry sample of silver chloride after mixing the solutions (3)

First set of the solution to remove the salt which has precipitated out. Then wash the insoluble salt and then leave it to dry on filterpaper

17

What ions do alkalis make?

OH- ions in water