10.2. Fertilisers
A subsection of Chemistry, 0620, through 10. Chemistry of the environment
Listing 10 of 92 questions
For Examiner's Use This question is about some compounds of nitrogen. A mixture of ammonium sulfate and sodium hydroxide was warmed in a test-tube. The gas was tested with moist red litmus paper. heat gently red litmus paper ammonium sulfate and sodium hydroxide State the name of the gas released. State the colour change of the litmus paper. Complete the word equation for the reaction of ammonium carbonate with hydrochloric acid. ammonium + hydrochloric ……… + ……… + ……… carbonate acid ……… ……… Ammonium salts such as ammonium nitrate, NH4NO3 and ammonium chloride NH4Cl are used as fertilisers. Explain why farmers need to use fertilisers. Explain why ammonium nitrate is a better fertiliser than ammonium chloride. For Examiner's Use Calculate the relative formula mass of ammonium nitrate. When ammonium nitrate is heated nitrogen(oxide is given off. Nitrogen(oxide relights a glowing splint. Name one other gas which relights a glowing splint. State one harmful effect of nitrogen oxides on the environment.
0620_s09_qp_2
THEORY
2009
Paper 2, Variant 0
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