Acids, Alkalis, And pH

Question 1

Why can acidic and alkaline solutions conduct

Answer 1

Their ions are free to move

Question 2

Why don’t neutral solution have a charge

Answer 2

They have equal concentrations of hydroxide and hydrogen

Question 3

What is the difference between acids and alkalis

Answer 3

Acids contain more hydrogen ions (H+) alkalis contain more hydroxide ions (OH-)

Question 4

How do you change the pH by 1

Answer 4

Dilute the solution 9:1

Question 5

What is the word equation for neutralisation

Answer 5

Acid + alkali (or metal oxide) = salt & water

Question 6

What are the products of adding metal carbonate to an acid

Answer 6

Salt, water, and carbon dioxide

Question 7

Describe one method of testing for carbon dioxide

Answer 7

Lime water- turns from clear to chalky white

Question 8

Describe a titration experiment

Answer 8

1- measure out substance 1 with pipette and transfer into conical flask
2- add pH indicator
3-add 2nd substance of known concentration into the burette and add it one drop at a time into the flask
4- When the solution is green, note the volume taken from the burette
5- calculate the concentration of substance 1

Question 9

What is the pH?

Answer 9

The concentration of hydrogen ions in a solution
Or
How acidic/alkaline a solution is

Question 10

What are the formulas for nitric acid, hydrochloride acid, and sulphuric acid?

Answer 10

Nitric acid- HNO3
Hydrochloric acid- HCl
Sulphuric acid- H2SO4