Acids and bases

Question 1

When is an alkaline solution formed?

Answer 1

When is a metal oxide is dissolved in water

Question 2

Explain why water has a neutral pH

Answer 2

there are equal quantities hydrogen and hydroxide ions

Question 3

Explain what the term dissociates means

Answer 3

brekas up into ions

Question 4

Explain why the conductivity of 1 moll-1 solution is higher than the conductivity of a 0.1 moll-1 sollution

Answer 4

There is a hgher cocentration of ions

Question 5

State what happens to the pH of an acid solution when copper carbonate is added to it

Answer 5

The pH increases as te acid is being neutralsied

Question 6

State what is meant by the term standard solution

Answer 6

A solution of accurately known concentration

Question 7

Explain why the production of sulfur dioxide would result in the pH of rain water decreasing if it was released into the atmosphere

Answer 7

Soluble metal oxides such as sulfur dioxide dissolve in water to form acidic solutions

Question 8

What equipment is best for measuring out accurately a known volume of solution

Answer 8

Pipette

Question 9

Which piece of chemical equipment is used in a titration to accurately measure the volume of acid required to neutralise an alkali

Answer 9

Burette

Question 10

What is a titration

Answer 10

The neutralisation of an acid by an alkali