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Page 1 7 inch 2.5 inch 2.5 inch 2.5 inch MOLE CONCEPT Page 2 7 inch 2.5 inch 2.5 inch 2.5 inch MOLE CONCEPT I N D E X Topic Page No. PHYSICAL CHEMISTRY MOLE CONCEPT 01. Mole 01 02. Methods to calculate mole 03 03 Laws of chemical combination 06 04. Significanceofchemical equation 09 05. Limitingreagent 10 06. Problems related with mixture 11 07. PercentageYield 11 08. Percentage purity 12 09. Problems related with sequential reaction 13 10. Problems related parallel reaction 14 11. Principle of atom conservation 15 12. Average atomic Mass 16 13. Average molecular mass 16 14. Empiricalandmolecular formula 17 15. Experimental methodsfor determination 19 MOLE CONCEPT Page 3 7 inch 2.5 inch 2.5 inch 2.5 inch MOLE CONCEPT I N D E X Topic Page No. PHYSICAL CHEMISTRY MOLE CONCEPT 01. Mole 01 02. Methods to calculate mole 03 03 Laws of chemical combination 06 04. Significanceofchemical equation 09 05. Limitingreagent 10 06. Problems related with mixture 11 07. PercentageYield 11 08. Percentage purity 12 09. Problems related with sequential reaction 13 10. Problems related parallel reaction 14 11. Principle of atom conservation 15 12. Average atomic Mass 16 13. Average molecular mass 16 14. Empiricalandmolecular formula 17 15. Experimental methodsfor determination 19 MOLE CONCEPT Topic Page No. 16. Eudiometry 23 17. V olume expansion and contraction in the edudiometer tube 24 18. General reactions for combustion of organic compounds 24 19. Analysis ofgaseous mixture 25 20. V olume -V olume analysis 26 21. Determination of molecular formula of gaseous hydrocarbon 26 22. Determination of molecular formula of gases 27 23. Concentration Terms 28 24. Methods of expressing concentration of solution 28 25. Molarityof ionic compounds 35 26. Mixingordilutionofsolution 36 27. Mixing of acid and base solutions 36 28. Problems involving precipitation 36 29. Some typical concentration terms 37 30. Relationship between different concentration terms 38 31. Solved examples 40 32. Exercise - 1 53 Exercise - 2 59 Exercise - 3 65 Exercise - 4 72 33. Answer Key 74 34. Hints/Solution 76 Page 4 7 inch 2.5 inch 2.5 inch 2.5 inch MOLE CONCEPT I N D E X Topic Page No. PHYSICAL CHEMISTRY MOLE CONCEPT 01. Mole 01 02. Methods to calculate mole 03 03 Laws of chemical combination 06 04. Significanceofchemical equation 09 05. Limitingreagent 10 06. Problems related with mixture 11 07. PercentageYield 11 08. Percentage purity 12 09. Problems related with sequential reaction 13 10. Problems related parallel reaction 14 11. Principle of atom conservation 15 12. Average atomic Mass 16 13. Average molecular mass 16 14. Empiricalandmolecular formula 17 15. Experimental methodsfor determination 19 MOLE CONCEPT Topic Page No. 16. Eudiometry 23 17. V olume expansion and contraction in the edudiometer tube 24 18. General reactions for combustion of organic compounds 24 19. Analysis ofgaseous mixture 25 20. V olume -V olume analysis 26 21. Determination of molecular formula of gaseous hydrocarbon 26 22. Determination of molecular formula of gases 27 23. Concentration Terms 28 24. Methods of expressing concentration of solution 28 25. Molarityof ionic compounds 35 26. Mixingordilutionofsolution 36 27. Mixing of acid and base solutions 36 28. Problems involving precipitation 36 29. Some typical concentration terms 37 30. Relationship between different concentration terms 38 31. Solved examples 40 32. Exercise - 1 53 Exercise - 2 59 Exercise - 3 65 Exercise - 4 72 33. Answer Key 74 34. Hints/Solution 76 BANSAL CLASSES Private Ltd. ‘Gaurav Tower’, A-10, Road No.-1, I.P .I.A., Kota-05 ACC- CH-MOLE CONCEPT 1 MOLE CONCEPT 1. MOLE A mole is the amount of substance that contains as many species [Atoms, molecules, ions or other particles] as there are atoms in exactly 12 gm of C-12. species 1 23 10 6.022 mole ? ? 2.1 Atomic mass Atomic mass of an element can be defined as the number which indicates how manytimes the mass of one atom of the element is heavier in comparison to 12 1 th part of the mass of one atom of Carbon-12. Atomic mass = ] 12 - carbon of atom an of Mass [ 12 1 ] element the of atom an of Mass [ ? = amu 1 amu in atom an of Mass 2.2Atomic mass unit (amu) or Unified mass (u) The quantity [ 12 1 × mass of an atom of C–12] is known as atomic mass unit. The actual mass of one atom of C-12 = 1.9924 × 10 –26 kg ? 1 amu = kg 12 10 9924 . 1 26 ? ? = 1.66 × 10 –27 kg = 1.66 × 10 –24 gm = A N 1 gm 2.3 Gram atomic mass The gram atomic mass can be defined as the mass of 1 mole atoms of an element. e.g., Mass of one oxygen atom = 16 amu = A N 16 gm. Mass of N A oxygen atom = A A N . N 16 = 16 gram Page 5 7 inch 2.5 inch 2.5 inch 2.5 inch MOLE CONCEPT I N D E X Topic Page No. PHYSICAL CHEMISTRY MOLE CONCEPT 01. Mole 01 02. Methods to calculate mole 03 03 Laws of chemical combination 06 04. Significanceofchemical equation 09 05. Limitingreagent 10 06. Problems related with mixture 11 07. PercentageYield 11 08. Percentage purity 12 09. Problems related with sequential reaction 13 10. Problems related parallel reaction 14 11. Principle of atom conservation 15 12. Average atomic Mass 16 13. Average molecular mass 16 14. Empiricalandmolecular formula 17 15. Experimental methodsfor determination 19 MOLE CONCEPT Topic Page No. 16. Eudiometry 23 17. V olume expansion and contraction in the edudiometer tube 24 18. General reactions for combustion of organic compounds 24 19. Analysis ofgaseous mixture 25 20. V olume -V olume analysis 26 21. Determination of molecular formula of gaseous hydrocarbon 26 22. Determination of molecular formula of gases 27 23. Concentration Terms 28 24. Methods of expressing concentration of solution 28 25. Molarityof ionic compounds 35 26. Mixingordilutionofsolution 36 27. Mixing of acid and base solutions 36 28. Problems involving precipitation 36 29. Some typical concentration terms 37 30. Relationship between different concentration terms 38 31. Solved examples 40 32. Exercise - 1 53 Exercise - 2 59 Exercise - 3 65 Exercise - 4 72 33. Answer Key 74 34. Hints/Solution 76 BANSAL CLASSES Private Ltd. ‘Gaurav Tower’, A-10, Road No.-1, I.P .I.A., Kota-05 ACC- CH-MOLE CONCEPT 1 MOLE CONCEPT 1. MOLE A mole is the amount of substance that contains as many species [Atoms, molecules, ions or other particles] as there are atoms in exactly 12 gm of C-12. species 1 23 10 6.022 mole ? ? 2.1 Atomic mass Atomic mass of an element can be defined as the number which indicates how manytimes the mass of one atom of the element is heavier in comparison to 12 1 th part of the mass of one atom of Carbon-12. Atomic mass = ] 12 - carbon of atom an of Mass [ 12 1 ] element the of atom an of Mass [ ? = amu 1 amu in atom an of Mass 2.2Atomic mass unit (amu) or Unified mass (u) The quantity [ 12 1 × mass of an atom of C–12] is known as atomic mass unit. The actual mass of one atom of C-12 = 1.9924 × 10 –26 kg ? 1 amu = kg 12 10 9924 . 1 26 ? ? = 1.66 × 10 –27 kg = 1.66 × 10 –24 gm = A N 1 gm 2.3 Gram atomic mass The gram atomic mass can be defined as the mass of 1 mole atoms of an element. e.g., Mass of one oxygen atom = 16 amu = A N 16 gm. Mass of N A oxygen atom = A A N . N 16 = 16 gram 2 ACC- CH-MOLE CONCEPT BANSAL CLASSES Private Ltd. ‘Gaurav Tower’, A-10, Road No.-1, I.P .I.A., Kota-05 Illustration (a) What is the mass of one atom of Cl? (b) What is the atomic mass of Cl? (c) What is the gram atomic mass of Cl? Sol. (a) Mass of one atom of Cl = 35.5 amu. (b) Atomic mass of Cl = 1amu amu in atom an of Mass = 1amu 35.5amu = 35.5 (c) Gram atomic mass of Cl = [Mass of 1 Cl atom × N A ] = 35.5 amu × N A = A N 35.5 × N A gram = 35.5 gram Exercise (a) What is the mass of one atom of S? (b) What is the atomic mass of S ? (c) What is the gram atomic mass of S? Ans. (a) 32 amu, (b) 32, (c) 32 gram 3.1 Molecular mass Molecular mass is the number which indicates how manytimes one molecule of a substance is heavier in comparison to th 12 1 of the mass of one atom of C-12. Molecular mass = ] 12 - C of atom an of Mass [ 12 1 amu) (in substance the of molecule one of Mass ? = amu 1 amu) in ( substance the of molecule one of Mass 3.2 Gram Molecular mass Gram molecular mass can be defined as the mass of 1 mole of molecules. e.g., Mass of one molecule of O 2 = 32 amu = gram N 32 A . Mass of N A molecules of O 2 = gm N N 32 A A ? = 32 gmRead More
1. What is the mole concept in chemistry? |
2. How is the mole concept used in chemical calculations? |
3. How do you calculate the molar mass of a compound? |
4. What is the relationship between moles and grams? |
5. How does the mole concept apply to gas calculations? |
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