Variation of Conductance with Temperature in Electrolytes Index 1.Certificate.................................................................3 2.Acknowledgements.....................................................4 3.Aim..........................................................................5 4.Apparatus..................................................................6 5.Important Terms........................................................7 6.Conductivity...
Premium Electrochemistry Electrolyte Electric current
densities and specific heat capacities of the solutions are the same as pure water i.e. ρ = 1.0 gcm-3 and c = 4.18 Jg-1K-1 1. Zinc will displace copper from copper (II) sulphate solution according to the following equation: CuSO4(aq) + Zn(s) ( Cu(s) + ZnSO4(aq) If an excess of zinc powder is added to 50 cm3 of 1.0 moldm-3 copper(II) sulphate‚ the temperature increases by 6.3 oC. Calculate the enthalpy change for the reaction. 2. Magnesium will also displace copper from copper (II)
Premium Enthalpy Thermodynamics Chlorine
In the first reaction‚ 0.95 g of pure copper was reacted with 4.0 mL of concentrated nitric acid under the fume hood. The solution was swirled until all of the copper had dissolved. The balanced equation for this reaction is as follows: Cu (s) + 4HNO3 (aq) à Cu(NO3)2 (aq) + 2NO2 (g) + 2H2O (l) When the nitric acid came into contact with the solid copper‚ a brown gas was immediately released into the fume hood. This brown gas was nitrogen dioxide as the balanced equation above shows. As the copper
Premium Sulfuric acid Copper Chemistry
solution of a salt is related to the relative position of the two metals in the reactivity. Presumably the further apart in the series the bigger the enthalpy change will be. The experiment is as follows‚ 1) Zn(s) + CuSO4(aq) ZnSO4(aq) + Cu(s) 2) Zn(s) + Pb(NO3)2(aq) Zn(NO3)2 (aq) + Pb(s) Both of the solutions will be in 1mol.dm-3 Apparatus: Distilled Water Polystyrene Cup Polystyrene Lid for cup Thermometer 1mol.dm-3 Copper Sulphate Solution 1mol.dm-3 Lead Nitrate
Premium Thermodynamics Zinc Energy
between zinc and copper sulphate. Zn (s) + CuSO4 (aq) Cu (s) + ZnSO4 (aq) Materials Required: 1M of CuSO4 Zinc powder Beaker Measuring Cylinder Thermometer Electronic weighing balance Spatula Thermometer Stop watch PROCEDURE: Measure 25cm3 of 1M of CuSO4 in a beaker Using a spatula take out zinc powder from its container and weigh out 2.5g of it using an electronic weighing machine. Use the thermometer to measure the initial temperature of the CuSO4 for 3 minutes. Slowly add the
Premium Thermodynamics Sulfuric acid Copper
MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
Premium Oxygen Sulfuric acid Copper
occur when a single reactant breaks down into multiple products (i.e. 2KCl (S) 2K (s) + Cl2 (g)). Single displacement reactions occur when one more active element kicks out or displaces another less active element in a compound (i.e. Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s)). Double displacement are similar to single displacement reactions however two elements are displaced instead (they switch compounds‚ observe: KCl (aq) + AgNO3 (aq) AgCl (s) + KNO3 (aq)). A neutralization reaction double displacement
Premium Chemical reaction Oxygen Chemistry
THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases / Concentration
Premium Chlorine Sodium hydroxide Oxygen
the following is not an attribute of a good domestic fuel? A) Fairly cheap and easily available B) Moderate rate of combustion C) Low calorific value D) Safe to handle‚ store and transport View Solution Question 8 The reaction Zn + CuSO4 → ZnSO4 + Cu is a ____
Premium Oxygen Combustion Liquid
Chemical Reactions What is a Chemical Reaction? Types of Chemical Reactions Redox Reactions Nonredox Reactions Classifying Reactions What is a Chemical Reaction? A chemical reaction is a process in which the identity of at least one substance changes. A chemical equation represents the total chemical change that occurs in a chemical reaction using symbols and chemical formulas for the substances involved. Reactants are the substances that are changed and products are the substances that are
Premium Chemical reaction