This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
You're on a roll — Here are the answers to your questions: 3. * a) Write an equation for the reaction that occurs in the combustion tube. (1mk) 2NH_3(g) + 3CuO(s) 3Cu(s) + N_2(g) + 3H_2O(l) b) State and explain the observations that were made in the combustion tube. (3mks) The black solid (copper(II) oxide) turned into a brown/pink solid (copper metal). This is because ammonia reduced the copper(II) oxide to copper metal. c) Name gas Y. (1mk) Nitrogen* d) (i) State any changes in observations that would be made if lead (II) oxide was used instead of copper (II) oxide. (2mks) The yellow solid (lead(II) oxide) would turn into a grey/silver solid (lead metal). d) (ii) Write an equation for the reaction between ammonia gas and lead (II) oxide. (1mk) 3PbO(s) + 2NH_3(g) 3Pb(s) + N_2(g) + 3H_2O(l) d) (iii) What property of ammonia is shown by the reaction in the combustion tube? (1mk) Reducing property* (Ammonia acts as a reducing agent). e) State two uses of ammonia. (2mks) i) Manufacture of fertilizers* (e.g., ammonium sulfate, urea). ii) Manufacture of nitric acid. (Alternatively: used as a refrigerant or in the manufacture of explosives*). 4. * a) Other than their location in the atom, name two other differences between an electron and a proton. (2mks) i) Charge: Protons are positively charged (+1), while electrons are negatively charged* (-1). ii) Mass: Protons have a significant mass (approximately 1 atomic mass unit), while electrons have a negligible mass* (approximately (1)/(1836) of a proton's mass). Send me the next one 📸