Investigation of the Factor that Affects the Change in Temperature Between
Iron and Copper Sulphate
In this investigation I am going to investigate a factor that effects
the change in temperature between copper sulphate solution and iron
filings.
The variable involved in this investigation are:
· The volume of copper sulphate
· The mass of iron filings added
· Rise in temperature
· Concentration of the copper sulphate
In this in investigation my input variable that I am going to change
will be the mass of iron filings that I will place into the copper
sulphate solution to see how the change in mass effects the rise in
temperature of the solution.
My prediction for this investigation is that as I increase the mass of
iron filings the greater the change in temperature. However, there
will be a point where, when I increase the mass of iron filings, the
change in temperature will be about the same as it was with the mass
of iron filings before it as there will not be enough copper molecules
to react with the iron.
My scientific reason for my prediction; the greater the mass of iron
filings; the greater the rise in temperature, is that a displacement
reaction will take place between the iron and the copper. Iron is
higher in the reactivity series of metals than copper, and a more
reactive metal will displace a less reactive metal from its compound.
The list (left) shows that iron is more reactive than copper.
The iron replaces the copper and becomes iron sulphate:
Iron + Copper Iron + Copper
Sulphate Sulphate
Fe + CuSO4 FeSO4 + Cu
This will result in an exothermic reaction, which will give us the
rise in temperature of the solution. An exothermic reaction is one,
which gives out energy to the surroundings usually in the form of heat
and is shown by a rise in temperature. This is because, during a
chemical reaction old bonds are broken and new bonds are formed; the
8. Continue stirring. Record the temperature at which crystals begin to appear in the solution.
There would be a change in the amount of energy given off that is getting greater, the more carbon atoms in the fuel, the more there are more bonds to be broken and formed, thus producing more energy. In a chemical reaction, bonds in the reactant molecule are broken and new ones are formed. Atoms are rearranged and rearranged. Energy has to be put in to break bonds, and energy is given out when bonds are formed.’ When the total energy put in is greater than the energy put out, the substance cools down (it is endothermic).
During this reaction the solution gained heat. This is what we were monitoring. The reason why the solution gained heat is because the reaction lost heat. Energy is lost when two elements or compounds mix. The energy lost/ gain was heat. Heat is a form of energy as stated above in the previous paragraph. The sign of enthalpy for three out of the four reactions matches what was observed in the lab. For the last reaction, part four, the reaction gained heat not the solution like parts one through three. The negative enthalpy value for part four indicates that the reaction gained
-------------------------------------------------------------------- The reactivity series is a table to show which metals are most reactive to the least reactive. Potassium is known as the most reactive and platinum the least. --------------------------------------------------------------
Since all metals have different densities and makeups I think that the heat capacity will greatly vary. The makeup of iron is very different than aluminum so the heat capacity will be quite different. Also, a lot of metals are not completely pure and that will also have some effect on the heat capacity.
To investigate the temperature change in a displacement reaction between Copper Sulphate Solution and Zinc Powder
Copper Oxide + Carbon Dioxide (CuCO3 = CuO + CO2) The reactivity series determines how fast this reaction occurs. The reactivity series is the order of metals in the periodic table. The most reactive metals are placed at the top of the reactivity series.
take about 30 minutes for the water to cool down 20ºC, which is why I
of Copper Sulphate. To do this I plan to work out the amount of water
Iron comes from the Latin word ferrum. From ferrum its symbol became Fe. The atomic number of iron is 26, and its atomic weight is 55.845. Iron is a magnetic, bendable, shiny white metallic element.
Effect of Temperature on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Investigation Chemical reactions are used in our everyday life, they literally keep us alive. They are used in food, respiration and everywhere else in the environment. A chemical reaction mainly occurs when reactants react together to produce a new product. The speed at which this reaction takes place is called the rate of reaction. The product produced has a number of particles in the solution that has formed from the reactants.
The hydrogen and the hydroxide ions react to form water. As bonds are made this is an exothermic reaction so heat will be given out and this will be shown as an increase in temperature. The chemical energy will be negative ( H is minus). APPRATUS/MATERIALS:- 1. Polystyrene cup [IMAGE] 2.
This form of chemical reaction is known as a single displacement reaction and is exothermic. The reaction is irreversible and is written as:
The iron hypothesis, created by John Martin, states that if the ocean could be enriched with iron, more phytoplankton blooms could grow that would take the carbon dioxide out of the atmosphere and possibly reverse the greenhouse effect. Martin’s test demonstrated that when you germinate high-nutrient, low-chlorophyll zones in the ocean with iron, you increase the production of phytoplankton blooms, this information proves his hypothesis true. This will improve the earth by making the carbon dioxide return to its natural level in the atmosphere. From that, the ice caps would not melt and animals would not go extinct. If the ice caps do melt, then there would be a worldly flood and the salt water would infect the clean water that we need to live. John Martin’s hypothesis could save the livelihood of humans and animals.
Thermodynamics is the branch of science concerned with the nature of heat and its conversion to any form of energy. In thermodynamics, both the thermodynamic system and its environment are considered. A thermodynamic system, in general, is defined by its volume, pressure, temperature, and chemical make-up. In general, the environment will contain heat sources with unlimited heat capacity, allowing it to give and receive heat without changing its temperature. Whenever the conditions change, the thermodynamic system will respond by changing its state; the temperature, volume, pressure, or chemical make-up will adjust accordingly in order to reach its original state of equilibrium.