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.
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You're on a roll — Here are the answers to your questions: 6. The flow chart below shows some reactions starting with lead (II) carbonate. Study it and answer the questions that follow. i) State the condition necessary in step 1. (1 mark) Step 1 involves the decomposition of lead (II) nitrate to nitrogen (IV) oxide. This reaction requires heat. Heating* ii) Identify (3 marks) I Reagent K Step 6 shows lead (II) carbonate reacting with Reagent K to form aqueous lead (II) nitrate. Lead (II) carbonate is an insoluble salt, and to convert it to a soluble nitrate, it must react with nitric acid. PbCO_3(s) + 2HNO_3(aq) → Pb(NO_3)_2(aq) + H_2O(l) + CO_2(g) Nitric acid* (HNO_3) II Gas Q Step 1 shows lead (II) nitrate decomposing to form nitrogen (IV) oxide, which is Gas Q. 2Pb(NO_3)_2(s) heat 2PbO(\