'Calculations in Chemistry' aims to help students overcome the challenges associated with doing Chemistry calculations. Covering a wide range of problems, it will help students maximise their performance in examinations.
The idea of 'Calculations in Chemistry' was conceived to give students a sound mastery of the numerous and diverse numerical problems encountered in Chemistry. Chemistry has a reputation of being a difficult subject due to the fact that it many numerical problems that many students find daunting. The fact that standard Chemistry texts do not always contain enough representative examples required for adequate understanding of problems makes a supplementary text of this nature, which is solely dedicated to an in-depth treatment of a wide range of numerical problems encountered in various aspects of Chemistry, a necessity.
The approach taken in the book has been carefully worked out to facilitate both teaching and learning. While it assumes adequate knowledge of the underlying mathematical principles, each section begins with a concise definition/explanation of the topic being treated. This is directly followed by many worked examples that are clearly presented in a stepwise manner that will give students a firm grasp of all the steps and tasks involved in performing each type of calculation.
Emphasis is placed on the use of formulas throughout the text to help students understand and remember the approach to solving problems. The worked examples are directly followed by practice problems that are intended to help students assess their understanding of what has been learnt in that particular section. Each chapter ends with further practice problems that build on the practice problems from each section.
The book comes with a lot of salient features that will facilitate both teaching and learning. In addition to assuming little or no prior knowledge of Chemistry, some of these features include:
1 Formula, Mass and Mole
1.1 Formula
1.2 Relative molecular and molar masses
1.3 The mole
1.3.1 Calculation of the number of moles from mass
1.3.2 Calculation of the number of moles of substances in
solution
1.3.3 Calculation of the number of moles from molar
volume
1.3.4 Calculation of the number of moles from the number
of particles
1.4 Empirical and molecular formulas
2 Chemical Equations and Stoichiometry
2.1 Chemical equations
2.2.1 Balancing chemical equations
2.2.2 Information from chemical equations
2.2.3 Ionic equations
2.2 Reaction stoichiometry
2.2.1 Limiting reagent
2.2.2 Percentage yield
2.3 Chemical laws
2.3.1 The law of definite proportions
2.3.2 The law of multiple proportion
3. Redox Reactions
3.1 Oxidation number
3.2 Redox equations
3.3 IUPAC Nomenclature of inorganic substances
4. Atomic Structure and Chemical Bonding
4.1 Dalton’s atomic theory
4.2 Isotopes
5. The Gaseous State
5.1 The kinetic theory of gases
5.2 Dalton’s law of partial pressures
5.3 Boyle’s law
5.4 Charles’s law
5.5 Combined (general) gas law
5.6 The ideal gas law
5.7 Avogadro’s law
5.8 Gay-Lussac’s law
5.9 Relative vapour density
5.10 Graham’s law of gaseous diffusion
5.11 Mole fraction
6. Properties of solutions
6.1 Concentration
6.2 Dilution law
6.3 Preparation of standard solutions
6.4 Solubility
6.5 Solutions of acids and bases
6.5.1 Brønsted-Lowry theory
6.5.2 Arrhenius theory
6.5.3 Lewis theory
6.5.4 Hydrogen ion concentration and pH
6.6 Water of crystallisation
7. Chemical Energetics
7.1 Heat (enthalpy change) of physical change
7.2 Heat (enthalpy change) of reaction
7.3 Types of heat of reaction and physical processes
7.4 Experimental determination of heat of reaction
7.5 Calculating heat of reaction from heat of formation
7.6 Calculating heat of reaction from average bond energies
7.7 Entropy
7.8 Free energy
7.9 The first law of thermodynamics
8. Electrochemistry
8.1 Metal ion/metal systems
8.1.1 Electrode potential
8.1.2 Electrochemical cells
8.1.3 Cell diagram
8.1.4 Cell potential
8.1.5 Cell potential and free energy
8.2 Electrolysis
8.2.1 Mechanism of electrolysis
8.2.2 Faraday’s first law
8.2.3 Faraday’s second law
9. Volumetric Analysis
9.1 Acid-base titration
9.1.1 Standardisation (Determination of concentration)
9.1.2 Solubility of bases
9.1.3 Mole ratio of acid to base
9.1.4 Percentage purity
9.1.5 Number of molecules of water of crystallisation of
hydrated salts
9.1.6 Molar mass
9.1.7 Mass of salt, number of ions and pH
9.1.8 Volume of carbon dioxide evolved
9.2 Back titration
10. Nuclear Chemistry
10.1 Radioactivity
10.1.1 Radioactive decay and nuclear equations
10.1.2 Half-life
10.2 Nuclear reactions
10.2.1 Nuclear fission and fusion
10.2.2 Binding energy
Answers to practice problems
Appendices
1: Conversion Factors
2: Multiples of SI Units
3: Sub-multiples of SI Units
4: SI Base Units
5: Standard Reduction Potentials
6: The Elements
7: Some Physical Constants
My book is primarily targeted at Secondary school students. This include students following different O Level curricula such as the UK GCSE, Cambridge IGCSE, Cambridge O Level, the West African Senior School Certificate, Australian National Standards, North American GED, Hong Kong’s HKCEE, the Indian CBSE/ICSE, IB Diploma Programme, Singapore’s GCE, THE Caribbean CSEC, the Irish Junior School Leaving Certificate, the New Zealand’s NCEA (Years 11-12), the Kenyan KCE, the Ugandan Certificate of Education, Zimbabwe’s ZIMSEC (GCE O Level), the South Africa’s National Senior Certificate, etc.
First-year university students who have to take a basic natural science course, usually consisting of Physics and Chemistry, as part of their degree requirements will also derive immense benefit from the book. The scope of the problems covered in the book is sufficient to meet the needs of the Chemistry part, which are often the fundamentals, of such courses.
I also recommend this book to students taking a first-year General Chemistry class, especially those with a limited background in Chemistry. The book contains more than eighty percent of the materials required for success in the calculation aspects of any General Chemistry course.
The book is also ideal for A-Level students and undergraduates whose chemical arithmetic is rusty and who need to master or revise the basic principles required for success in more advanced calculations.
My book will also prove an invaluable supplementary text to everyone who is new to Chemistry. For example, it is ideal for students undergoing degree foundation programmes for 4-year degree courses with limited or no previous knowledge of Chemistry.
Teachers, lecturers, and scientists will find the book extremely useful as a reference material for Chemistry calculations.
Some websites and other parts of the internet attract a large number of students. Thus, I plan to utilise the internet as a major part of my marketing strategy. By employing the services of a marketing agency, I will place adverts on most corners of the internet my audience love to visit, such as the social media and educational websites.
Another approach I will be taking is to send complimentary copies of the book to a select group of examination bodies, education ministries, and international/independent schools across the world in order to convince them to adopt my book. I will also send emails to a massive list of professors.
Moreover, I intend setting up a website where people can learn how to do Chemistry calculations. This will afford me the opportunity to introduce my book to those who visit the website for help on Chemistry calculations. I am going to create an Amazon associates account and add an image of my book and a link back to Amazon on my site.
I also plan to generate many positive reviews, which I believe my book will attract, to encourage people to buy or adopt my book. I intend achieving this by sending review copies to a select group of digital and print media who review educational books. Some of the media I have identified include the School Science Review by the Association for Science Education, Royal Chemistry Society, School Library Journal, Publishers Weekly, Booklist Online, and Holocaust Teacher Resource Center.
I will also explore the possibility of translating my book into Spanish and German, two of the most widely spoken languages, to increase my sales reach.
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The author is a graduate of chemical and polymer engineering. He is a former science teacher with many years experience of teaching Physics, Chemistry and Mathematics.
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You will have my eternal gratitude. You will receive a special thanks in the acknowledgement. You will also receive 250 customised copies, including a signed copy, of my book to distribute or donate as you like, plus a thank you note. Please feel free to send me an email at john_obimakinde@yahoo.com so that we can discuss how we can work together.
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