Qualitative Analysis

Which gas does 'limewater' test for?

• CO2

• H2

• O2

• NH3

What test should be used for testing oxygen?

• red litmus paper

• limewater

• squeaky pop

• glowing splint

Which of the following gas can be tested by the 'squeaky pop' test?

• CO2

• H2

• O2

• N2

What colour does damp blue litmus paper change into when there is Chlorine gas?

• it stays blue

• red

• none of the above

• white

what colour is chlorine gas?

• colourless

• yellow

• yellow-green

• brown

if a gas turns red litmus paper blue, what is it?

• NH3

• N2

• O2

• H2

what is the colour of Cu(II) ion?

What is the colour of the precipitate that Fe(II) produces?

What is Fe(OH)3?

• brown solution

• red solid

• white solid

• foxy brown solid

NH4+ is called an _________ ion. (hint: 8 letters!)