Stoichiometry

Chemistry, HSSC-KPK First Year. This chapter is split into 41 topics and has 1,113 practice questions. The topics covered are listed below, followed by 10 free sample questions from the chapter.

Topics in this chapter

1. Mole concept, Avogadro's number & the gram-atom 25 questions
2. Molar mass & mole-mass-particle conversions 25 questions
3. Balanced equations & the law of conservation of mass 25 questions
4. Mole-mole and mole-mass stoichiometry 25 questions
5. Mass-mass stoichiometry 25 questions
6. Gaseous reactions: Avogadro's law & molar volume at STP 25 questions
7. Percentage composition & mass of an element in a sample 25 questions
8. Limiting and excess reagents 25 questions
9. Theoretical, actual and percentage yield 25 questions
10. Formula masses of common compounds and ions 30 questions
11. First twenty elements: symbols, atomic numbers and atomic masses (Table 1.1) 30 questions
12. Moles from mass: new numerical problems 30 questions
13. Mass from moles: new numerical problems 30 questions
14. Counting atoms, molecules and formula units in a sample 30 questions
15. Hydrated salts: molar mass, moles and water of crystallisation 30 questions
16. Mole equations 1.1 to 1.6: rearrangements, units and meaning 24 questions
17. The mole and Avogadro's number: comparisons and everyday analogies 22 questions
18. Mole-mole conversions with new equations 30 questions
19. Mole-mass conversions with new equations 30 questions
20. Mass-mass stoichiometry: new problems on decomposition and combustion 30 questions
21. Mass-mass stoichiometry: new problems on metals, acids and displacement 30 questions
22. Mass-mass stoichiometry: required mass of reactant 30 questions
23. Moles, mass and volume of gases at STP 30 questions
24. Gas volume-volume reactions at STP 25 questions
25. Mass-volume reactions at STP 30 questions
26. Percentage composition: percent of one element in a compound 30 questions
27. Percentage composition: oxygen, hydrogen and comparing compounds 30 questions
28. Mass of an element in a sample from percentage composition 25 questions
29. Limiting reagent: identification from amounts in moles 30 questions
30. Limiting reagent: amounts given in grams and mass of product 30 questions
31. Excess reagent: amount left unreacted at the end of a reaction 30 questions
32. Percentage yield: calculating percent yield from experimental data 30 questions
33. Percentage yield: calculating the actual yield and the reactant needed 30 questions
34. Percentage yield combined with limiting reagent problems 30 questions
35. Reading a balanced equation: molecules, moles, masses and gas volumes 23 questions
36. Balancing equations, atom counts and conservation of mass 24 questions
37. Practice problems and exercise numericals: book problems re-examined 24 questions
38. Conversion roadmap (Figure 1.2) and units of volume and amount 24 questions
39. Limiting and excess reagents: concepts, Figure 1.3 and analogies 23 questions
40. Yield: theoretical, actual and percentage yield - further concepts and reasons 24 questions
41. Introduction, Science-Technology-Society box and project of Unit 1 20 questions