Y9 - Acids and alkalis - indicators

What pH range does a strongly acidic solution have?

• 0-3

• 4-6

• 7

• 8-10

• 11-14

What pH range does a strongly alkaline solution have?

• 0-3

• 4-6

• 7

• 8-10

• 11-14

What pH range does a weakly alkaline solution have?

• 0-3

• 4-6

• 7

• 8-10

• 11-14

What pH range does a weakly acidic solution have?

• 0-3

• 4-6

• 7

• 8-10

• 11-14

What pH does a neutral solution have?

• 0-3

• 4-6

• 7

• 8-10

• 11-14

What colour is methyl orange in an acidic solution?

• yellow

• pink

• red

• colourless

What colour is methyl orange in an alkaline solution?

• yellow

• pink

• red

• colourless

What colour is phenolphthalein in an alkaline solution?

• pink

• yellow

• colourless

• red

What colour is phenolphthalein in an acidic solution?

• pink

• yellow

• colourless

• red

What colour is litmus in an acidic solution

• red

• blue

• yellow

• green