Nuetralisation

Question 1

What is the definition of neutralisation

Answer 1

Neutralisation is the reaction between an a acid and an alkali producing a salt and water

Question 2

What are the three most common acids and the salts they produce

Answer 2

Hydrochloric acid=chloride
Sulfuric acid =sulfate
Nitric acid =nitrate

Question 3

What is a base

Answer 3

A base is a substance that reacts with an acid producing a salt and water

Question 4

What is an alkali in terms of a base

Answer 4

An alkali is a special type of base that will dissolve in water/is a soluble base(metal hydroxide)

Question 5

Name 5 common bases

Answer 5

Sodium hydroxide
Calcium oxide
Potassium hydroxide
Lithium oxide
Copper oxide

Question 6

Which of the following are alkali:
Sodium hydroxide
potassium hydroxide
Copper oxide
lithium oxide
calcium oxide

Answer 6

Sodium hydroxide
Potassium hydroxide

Question 7

Name ways neutralisation in used in every day life

Answer 7

Farming-soil treatment- plants grow best a pH7-chemicals(lime) added to change the pH of the soil
Indigestion-Hydrochloric acid in our stomachs-too much acid creates indigestion-use a base(indigestion tablet) to neutralise.(Gaviscon/rennie)
Insect stings=
-bee sting=acid=neutralise using baking soda (base)
-wasp sting=alkali=neutralise with acid(vinegar)

Question 8

MASH

Answer 8

Metal+acid -> salt+hydrogen

Question 9

Acid+ alkali->

Answer 9

salt+water
Alkali being metal hydroxide

Question 10

Acid+base->

Answer 10

Salt+water
Base bring a metal oxide

Question 11

Acid+metal carbonate

Answer 11

Salt+water+carbon dioxide

Question 12

Indicator

Answer 12

Is a chemical that gives a colour change in acidic,alkaline and neutral solution

Question 13

Red litmus paper

Answer 13

Hydrochloric acid=red
Water=red
Sodium hydroxide =blue

Question 14

Blue litmus paper

Answer 14

Hydrochloric acid=red
Water=bluel
Sodium hydroxide =blue

Question 15

Universal indicator solution

Answer 15

Hydrochloric acid=red
Water=green
Sodium hydroxide =purple

Question 16

Methyl orange

Answer 16

Hydrochloric acid=pink/red
Water=orange
Sodium hydroxide =yellow

Question 17

Screened methyl orange

Answer 17

Hydrochloric acid=red/orange
Water=green
Sodium hydroxide =greeen

Question 18

Phenolphthalein

Answer 18

Hydrochloric acid=colourless
Water=colourless
Sodium hydroxide =pink

Question 19

What colourful chemicals change colour when mixed with an acid or alkali

Answer 19

Dyes

Question 20

The colour chemicals/dyes are called

Answer 20

Indicators

Question 21

An example of an indicator is litmus paper. We use it to test for

Answer 21

Acids or alkali
Blue litmus paper will turn red when mixed with an acid
Red litmus paper will turn blue when mixed with an alkali

Question 22

Where can we get colourful dyes from

Answer 22

Many flowers and fruit

Question 23

Another type of indicator is universal solution. What is this

Answer 23

A mixture of different coloured chemicals. Which allows a more accurate testing of acids and alkalis.

Question 24

What scale does universal solution use

Answer 24

pH scale
The colours match to a certain pH that ranges from 1to 14

Question 25

pH numbers between 1 and 6 are

Answer 25

Acids Strong=1-2 Weak=3-6

Question 26

pH number of 7 is

Answer 26

Neutral

Question 27

oh numbers between 8and 14 are

Answer 27

Alkalis Weak=8-11 Strong=12-14

Question 28

oh numbers between 8and 14 are

Answer 28

Alkalis Weak=8-11 Strong=12-14

Question 29

What is the word simple word equation for neutralisation

Answer 29

Acid+Alkali->salt+water

Question 30

How do you form the slat part of a word equation

Answer 30

You take the name of the metal and the name used to replace the acid

Question 31

What is the difference between an alkali and a base

Answer 31

Many bases are insoluble however if a base such as sodium hydroxide is soluble in water the. It is known as an alkali

Question 32

All alkalis are bases

Answer 32

But only soluble bases are alkalis

Question 33

What are examples of bases in the home

Answer 33

Strong household cleaners-drain and oven cleaner-ammonia Weak =toothpaste,antacid tablets and baking powder

Question 34

What are the steps for tritation

Answer 34

1.Rince Burette with hydrochloric acid then fill to the 0.00 cm³ mark 2.Measure 25 cm3 of sodium hydroxide solution in a measuring cylinder 3.Pour the sodium hydroxide in conical flask add 3 to 4 drops of phenolphthalein indicator. 4. Add hydrochloric acid and swell the chronicle flask until there’s a permanent colour change from pink to colourless. Record the volume of acid used. repeat.

Question 35

During the citation experiment what colour change occurs

Answer 35

The phenolphthalein indicator starts pink in the alkali and then becomes colourless when neutralise with an acid

Question 36

What salt is produced in the try titration anything experiment?

Answer 36

Sodium chloride

Question 37

What was the word equation titration?

Answer 37

Hydrochloric acid+ sodium hydroxide-> sodium chloride+ water

Question 38

What is a salt

Answer 38

A compound formed when some or all of the hydrogen ions in an acid are replaced by metal ions or a ammonium ions