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Flashcards in chemistry Deck (58)
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1

what is the pH of acids?

less than 7

2

what is the pH of alkalis?

more than 7

3

What has a pH equal to 7?

pure water & neutral solution

4

what HAPPENS in a neutralizing reaction?

the pH of the acid moves up towards 7. If an alkali is being used as the neutraliser its pH moves down towards 7.

5

what is an EXAMPLE of neutralisation?

The reaction of hydrogen ions H+ (aq) to form water

6

what IS a neutralisation reaction?

is the reaction of an acid with neutralisers such as alkalis, carbonates and metal oxides, which produces water and a salt.

7

What happens to the pH of an ACID as it is neutralised?

The pH of an acid increases towards 7 in a neutralisation reaction.

8

What happens to the pH of an ALKALI as it is neutralised?

The pH of an alkali decreases towards 7 in a neutralisation reaction.

9

alkali + acid →

salt + water

10

metal oxide + acid →

salt + water

11

metal carbonate + acid →

salt + water + carbon dioxide

12

hydrochloric →

chloride

13

sulpheric →

sulphate

14

nitric →

nitrate

15

hydrochloric acid →

HCl

16

nitric acid →

HNO3

17

sulfuric acid →

H2 SO4

18

phosphoric acid →

H3 PO4

19

carnonic acid →

H2 CO3

20

acetic acid →

HC2 H3 O2

21

catalyst

increases the rate of a chemical reaction without being consumed by reaction

22

exothermic

reaction that releases heat

23

endothermic

absorbs heat

24

precipitate

a solid formed from 2 solution

25

solution

being dissolved

26

solute

a dissovled substance

27

insoluble

cannot be dissolved

28

aqueous

dissolved in water

29

reactant

starting material in a chemical reaction

30

product

substance produced in a chemical reaction