Basic Chemistry Formulas And Equations
fermiwords

Basic Chemistry Formulas And Equations

02 basic chemistry concepts
World Bank & Government of The Netherlands fundedTraining module # WQ I-2New Delhi, May 1999CSMRS Building, 4th Floor, Olof Palme Marg, Hauz Khas,New Delhi

11 00 16 IndiaTel: 68 61 681 / 84
Fax: (+ 91 11)

68 61 685DHV Consultants BV & DELFT HYDRAULICSHALCROW, TAHAL, CES, ORG & JPSHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 11Module context22Module profile33Session plan44Overhead/flipchart handouts368Main text39Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 21

Module contextThis module introduces basic concepts of chemistry required by chemists at all levels in theirdaily work in the laboratory.

No prior training in other module is needed to complete thisHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 32

Module profile:As per training need:One session of 90 min:After the training the participants will be able toDiscuss the basic concepts of quantitative chemistryReport analytical results with the correct number ofKey conceptsPrinciples of titrationSignificant figures:Lecture, exercises:Board, flipchart, OHS:As provided in this moduleChemistry of Environment Engineering, C.N.Sawyer, P.L.McCarty and C.F.Parkin.

McGraw-Hill, 1994Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 43

Session planNoActivitiesTimeTools Basic chemistry concepts5 minOHS Introduce the subject of units of measurementand the importance of standardisation of units.Demonstrate how to calculate theconcentration of substances in liquids and Explain and emphasise use of factor label Describe the concept of ion charge, neutralityof molecules and molecular weights.10 minMain text Explain the concept, determination and use ofequivalent weights emphasising factor label15 minMain text Define standard solutions and describeEmphasise again the use of factor label method inall calculations.15 minOHS Explain importance of reporting data insignificant figures.10 minOHS Ask participants to answer the questions in Distribute exercise sheets as additional Distribute & discuss answers.

Refer to additional questions for homeworkHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 54

Overhead/flipchart mastersType of 30-36, Bold with bottom border line (not:Text:OHS-lev1OHS-lev2maximum two levels onlyCase:Sentence case.Avoid full text in UPPERCASE.Italics:Use occasionally and in a consistent for definite series of steps.

AvoidColours:None, as these get lost in photocopying andsome colours do not reproduce at all.OHS-EquationUse of a table will ease alignment over morelines (rows and columns)Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 71.Units of

measurement2.Elements, compounds and molecular weights3.Equivalent weights and chemical reactions4.Titrimetric calculations5.Significant figuresHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 8See table 1 & 2 in HandoutHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 9Example:Four kg common salt is thrown in a tank containing 800 m3 ofwater.What is the resulting concentration of salt in mg / L?4 kg10mg1 kg10L800105----Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 10mgmg5----5----x---------LL1 mg5000----Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 11 Elements combine to make compounds which do not have Compounds dissolved in water dissociate into charged Radicals are groupings of elements acting together asHydrology Project Training Module File:

02 Basic chemistry concepts
basic chemistry formulas and equations
.doc Version 05/11/02Page 12Write the molecular formula for aluminium sulphate (alum) if = 6Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page content:3X----=Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 14 Molecular weight / Valency Valency is equal to: Quantity of chemicals equivalent to each other One chemical expressed as another Same number of equivalents of reactants in a chemicalHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 151 meq50mg Ca300--------------Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 162NaOH+H=Na+2HHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 17 Standard solutions contain known concentration of one 1

React standard solution against unknown concentration in End point is determined using indicator Eq of reactant in standard

= Eq of reactant in sampleHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 18----------x12.4mL1.24 meqmLTherefore alkalinity=Hydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 19Example (Contd.):Expressed as Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 20 Significant figures in a number comprise Round off by dropping digits that are not significantHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 21 Addition/Subtraction: results have the same decimalHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 22 Multiplication/Division: results have the same number ofHydrology Project Training Module File:

02 Basic chemistry concepts.doc Version 05/11/02Page 231.

Express 0.1 m/s velocity in km/d3.How many significant figures are there in 41.94, 0.0075, Hydro
Chapter 8 basic review worksheet
Name _________Date __________1.Spectator ions are not included in writing the net ionic equation for a precipitation reaction.2.Are strong acids and bases also strong electrolytes?

Give several examples of strong acids and3.Three common strong acids are HCl, HNO4.The reagent shelf in a general chemistry lab contains aqueous solutions of the an oxidation reaction take place without a reduction also taking place?

Why?6.List and define all the ways of classifying chemical reaction that have been discussed in the text.Name _________Date __________1.Give some examples of driving forces that make reactants tend to form products.

Write a2.What would you see if a precipitation reaction were to take place in a beaker?

Write a balanced3.What types of substances tend to be strong electrolytes?

What does a solution of a strong4.How do we use the solubility rules in determining the identity of the solid formed in a5.Why are the spectator ions not included in writing the net ionic equation for a precipitation6.Write chemical equations showing the formation of three different salts.

What other product is7.What is essential in an oxidation-reduction reaction?

Write a balanced chemical equation8.Are combustion reactions a unique type of reaction, or are they a special case of a more general9.Are synthesis and decomposition reactions always also oxidation-reduction the reaction represented by each of the following chemical equations in as a.Mg(s) + COb.Cc.Co(NHd.HCl(aq) + Pb(Ce.Al(s) + HNOName _________Date __________1.What is meant by the 2.What is a 3.Define the term 4.Summarize the simple solubility rules for ionic compounds.5.In general terms, what are the 6.Describe some physical and chemical properties of 7.What is a 8.What is 9.What is a 10.Give an example of a 11.Classify the reaction represented by each of the following chemical equations in as a.NaOH(s) + CuSOb.HI(aq) + KOH(aq) c.FeO(s) + HNOd.Ce.B(s) + O.
© 2012 labroda
Downloadic - infolari - Contact · Privacy Policy