The Effects of Acid Rain on Statues :: Acid Rain Chemical Reactions Essays

The Effects of Acid Rain on StatuesIntroduction------------During this investigating, I will use dilute hydrochloric acid as theacid rain and embarrassed calcium change as the chemical of thestatues. Then I will time how vast it fulfils for the limestone powderto react until there is no more left wing when the acid is added to it. Rain contains acid naturally as it collects carbon dioxide from theair and makes carbonic acid. Rain normally has a pH of about 5.5 itis slightly acerbic due to the carbon dioxide turn in it. It is astronger acid if gases like sulphur dioxide and nitrogen oxides escapeinto the air from the burning fossil fuels, because they are dissolvedby the rain and produce sulphuric and nitric acids that does moredamage in a faster time. Acid rain reacts with statues and buildingsthat contain calcium carbonate and form carbon dioxide and water. The dilute hydrochloric acid in this investigation will have the sameeffect on the limestone as the acid rain on the s tatues. Yet, theonly difference is that in nature, the acid rain reacted with thestatue as a whole body, which takes approximately hundred years tocorrode the object, whereas the hydrochloric acid in thisinvestigation will take only few seconds to react with the limestonepowder. computer programningAim---The aim of my experiment is to investigate if the speed at which thelimestones are dissolved is changed by how concentrated the acid is.EquipmentTo do my experiment, I will need beakers, a paper spoon, a stop clock,limestone powders, stirring rod, measuring cylinders and an electronicbalance for powdersPlanFor this experiment, I will use 30mls of the acid each time and 1gm ofpowdered calcium carbonate. The concentration of the acid will bechanged by adding water and little acid each time. First, I will use a paper spoon to spoon out the limestone powder andweigh it on the electronic balance. Next, take out the excess powderuntil the weight is 1gm. Then use two measuring cylinders, with eachmeasuring the amount of water and dilute hydrochloric acid that shouldbe added, e.g. when there is 30mls of acid, 0mls of water will beadded when there is 25mls of acid, 5mls of water will be added, andso on. The total amount will always be 30mls. Afterwards, I will pourthe powder into a beaker that contain correct amount of acid in it anduse a stop clock to time how long it will take for the powder todisappear. A stirring rod will be used so that no lumps would form.