Essay about Hard Water Lab Report

1033 Words Oct 30th, 2011 5 Pages
Lab Report: Hard Water
Purpose:
The purpose of this lab is to determine whether a liquid is hard water or not.
Background:
Hard water is the water that has a high amount of mineral in it, usually Ca2+ and Mg+. These cations enter the source of water by leaching from minerals within a wet underground layer of water- bearing rock, or an aquifer. According to the WHO, hard water is not harmful to human’s health but it’s a serious problem in the water industry. Household plumbing and appliances are also greatly affected by hard water conditions. Some of the effects include clogged pipes, water heater inefficiency and hard scaling. Hard water is also linked to decreased water flow or water pressure and seized (frozen) valves in faucets,
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5) Why is it important to make up all of the reagents used in this experiment in distilled water rather than tap water?
It’s important to make up all of the reagents used in this experiment in distilled water rather than tap water because if we used tap water (which is also hard water) as a buffer, we would be added more calcium and magnesium to the tested water without knowing it. Therefore, the final result of how hard the water is would be incorrect. We would conclude that the water is much harder than how it really is.
Conclusion:
After this experiment, the hardness of 2 different sources of water, Elk Grove tap water and Wilton well water is determined. The well water of Wilton is about two times harder than the Elk Grove tap water. Well water needed averagely 28.5 drops to turns into sky blue while Elk Grove tap water only needed 16. The difference is about 12.5 drops. Therefore, the hypothesis is fully supported.
Well water is harder than tap water because the water from the well came directly from the underground aquifers while tap water, even though it might come from the same source, the water company must somehow distilled it before it was put into used. The government has set a standard of how much calcium and magnesium could be in order to keep everyone healthy and prevent diseases. However, there were people in suburban area, to save some money, use well

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