Chemistry · Oct / Nov 2020 · Paper 11 · Question 26

Some compounds containing nitrogen are used as fertilisers. The table shows some nitrogen-containing compounds, whether they are used as a fertiliser or not and a reason for this. Which row is correct?

1. Aaqueous ammonia, NH3(aq) | yes | lowers the pH of the soil
2. Bammonium carbonate, (NH4)2CO3 | no | is insoluble in water
3. Cammonium chloride, NH4Cl | yes | is made from the products of the Haber process and the Contact process
4. Dammonium nitrate, NH4NO3 | yes | is soluble in water

As printed in the paper