Indicators

Question 1

what colours does methyl orange turn in acidic, neutral and alkali solutions?

Answer 1

acidic - red
neutral - yellow
alkali - yellow

Question 2

what colours does phenolphthalein turn in acidic, neutral and alkali solutions?

Answer 2

acidic - colourless
neutral - colourless
alkali - pink

Question 3

what colours does universal indicator turn in acidic, neutral and alkali solutions?

Answer 3

acidic - red
neutral - green
alkali - blue

Question 4

what colours does blue litmus paper turn in acidic, neutral and alkali solutions?

Answer 4

acidic - red
neutral - blue
alkali - blue

Question 5

what colours does red litmus paper turn in acidic, neutral and alkali solutions?

Answer 5

acidic - red
neutral - pink
alkali - blue

Question 6

How do you test for ammonia?

Answer 6

Add sodium hydroxide
Then test with damp red litmus paper
It will turn blue