Chemistry Lab Report: The effect of acid rain on different metals Essay

* Research question From all(a) of the alloys Iron, Copper, Tin, Aluminium, Lead, Nickel, utilise in the architecture of a building, which of these metals forget corrode the least when paneulated precipitate reacts with these metals?* range Information Acid precipitate is caused by air pollution when fossil fuels such as coal, oil or natural gas is ruin and when smoke is emitted from industries into the air. Sulfur dioxide and nitrogen oxides which is present in the smoke, reacts with the water and the otherwise chemicals in the air to form nitric venomous(HNO3) and sulfuric acid (H2SO4) which waterfall down to the earths surface as acid rain and since it is corrosive, it causes damage to buildings, sculptures and to other forms of infrastructure.* Theory Metals such as, Copper, Tin, Aluminum, Lead, Nickel, give corrode or dissolve in the acid when it reacts with acid rain causing the galvanic pile of the metal to decrease. It also causes the metal to rust which makes it useless for the building.All the metals, will decrease in their aggregate when reacted with acid rain so to pulse which metal is destructed the most, the red in mass for all the metals over a fixed period of metre will be used for investigation.* Materials used for the sample* 3000 ml of acid rain for investigation.* snow0 ml ( 5 ml) measuring cylinder for measuring the amount of acid rain used.* ampere-second g of solidness Tin chips.* 100 g of solid pig bed chips.* 100 g of solid Iron chips.* 100 g of solid Lead chips.* 100 g of solid nickel chips.* 100 g of solid Aluminium chips.* Stopwatch.* 30 large beakers of 100 ml( 0.5 ml) each.* Spatula.* Pan counterpoise (0.001 gram)* 5 litres of distilled water.* Variables for the experiment* Independent Variable The independent unsettled of the experiment is the metal used for each trial of the investigation to obtain the data. This is the yet factor which will be unplowed changed for all the experiments.Each metal will be measured by dealing 10 g by using the pan balance for each trial.* Dependent variable The dependent variable is the loss in mass over the time given for the metal to dissolve in the acid rain. As this will depend on the metal used. As the metal which has the greatest lading loss, that metal would be the one which should not be used for a metal in building. The metal with the least loss should be used.The loss in mass of the metal will be measured in grams by urge oning all the beakers with a pan balance with acid rain in it and adding the metal to the acid rain forming a resoluteness and compacting it. After the fixed amount of time kept, reckon the last amount of the beaker. The difference between the initial and the final mass of the beaker with the circumscribe will be the loss which is the dependent variable.* Constants of the experiment The incessant factors of the experiment are the time given for the decrease in mass for all the 6 metals. The mass of each metal used is kept constant for all the trials. The volume of acid rain used is also kept constant for all the trials.* Controlling the variablesTo control the variables of the experiment, the metals, will be located in distilled water to ensure that it does not get dissolved in normal water and only gets eaten away in acid rain so that the metal used will be tested offset printing to see whether it will dissolve in acid rain to happen upon the best possible result.* Procedure of the experiment1. Measure out 100 ml of distilled water with the measuring cylinder and pour it into the beaker.2. Weigh the mass of the beaker with the water in it with a pan balance.3. Take Iron chips and weigh 10 g of it with a pan balance and place it in the beaker.4. Weigh the beaker with these contents as the initial weight and cover it with a lid.5. Start the time and keep the time as 30 legal proceeding for the experiment.6. Repeat steps 1 to 5 for Copper, Tin, Aluminium, Nickel, and Lead.7. After 30 minu tes, weigh the mass of the beaker with its contents.8. Record the change in mass.9. Repeat steps 7 to 9 for Aluminum, Copper, Tin, Lead and Nickel.10. Measure out 100 ml of acid rain with the measuring cylinder and pour it into the beaker.11. Weigh the mass of the beaker with the acid rain in it with a pan balance.12. Take Iron chips and weigh 10 g of it with a pan balance and place it in the beaker.13. Weigh the beaker with these contents as the initial weight and cover it with a lid.14. Start the time and keep the time as 30 minutes for the experiment.15. Repeat steps 10 to 14 for Copper, Tin, Aluminium, Nickel, and Lead.16. After 30 minutes, weigh the mass of the beaker with its contents.17. Record the change in mass.18. Repeat steps 7 to 9 for Aluminum, Copper, Tin, Lead and Nickel.