Chemistry: STOICHIOMETRIC RELATIONSHIP Topical Past Paper Questions
IB Diploma Programme Chemistry past-paper questions on STOICHIOMETRIC RELATIONSHIP, free. This topic is frequently examined across 17 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Aspirin and morphine are analgesics. (a) Aspirin was synthesized by mixing 0.897g of salicylic acid with excess ethanoic anhydride. $ M_{r} $ (salicylic acid) = 138.13 $ M_{r} $ (aspirin) = 180.17. Salicylic acid Aspirin (i) Calculate the theoretical yield of aspirin, in g. (ii)…
Methanoic acid can be converted into methyl methanoate, $ HCOOCH_{3} $. (a) State the name of the reagent and catalyst required. Reagent: Catalyst: (b) 1.72g of methyl methanoate is produced from 2.83g of methanoic acid and excess of the other reagent. Determine the percentage yi…
Ammonium nitrate, $ NH_{4}NO_{3} $, is used as a high nitrogen fertilizer. (a) Calculate the percentage by mass of nitrogen in ammonium nitrate. Use section 6 of the data booklet. $$ [{\sf H}_{3}{\sf O}^{+}]=1.07\times10^{-5} $$ (e) Cold packs contain ammonium nitrate and water s…
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