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Decomposition Reactions

Chemistry ⇒ Chemical Reactions and Equations

Decomposition Reactions starts at 9 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Decomposition Reactions. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
Calculate the mass of oxygen produced when 24.5 g of potassium chlorate (KClO3) decomposes completely. (Molar mass of KClO3 = 122.5 g/mol)
Calculate the volume of oxygen gas at STP produced by the decomposition of 10 g of potassium chlorate. (Molar mass of KClO3 = 122.5 g/mol, 1 mol gas at STP = 22.4 L)
Describe the importance of decomposition reactions in the environment.
Describe the role of a catalyst in the decomposition of hydrogen peroxide.
Explain the difference between thermal and photolytic decomposition reactions.
Explain why decomposition reactions are usually endothermic.
Explain why some decomposition reactions require light while others require heat.
State one industrial application of decomposition reactions.
State the products formed when ammonium nitrate is heated.
State the products formed when ferrous sulfate is heated strongly.
The decomposition of hydrogen peroxide is catalyzed by which enzyme in living organisms?
Write the balanced chemical equation for the thermal decomposition of potassium chlorate.
Write the balanced equation for the decomposition of barium azide.
Write the balanced equation for the decomposition of lead(IV) oxide.
Write the balanced equation for the decomposition of sodium bicarbonate.