HSC BIOLOGY ASSESSMENT TASK 1 Caudillo: Wissam Bardouh
HSC BIOLOGY ASSESSMENT TASK you
MAINTAINING A BALANCE
TASK: OPEN-ENDED INVESTIGATION
Our task is usually to plan, select equipment and perform a quality investigation to show the effect of dissolved carbon on the ph level of normal water.
DUE DATE: 21/11/07
CONDUCTOR: Wissam Bardouh
EFFECT OF DISSOLVED CARBON DIOXIDE (CO2) ON PH OF WATER
((Carbon Dioxide is a green house gas. It is everywhere including our bodies towards the atmosphere. Carbon dioxide is produced in living creatures as a result of cell phone respiration (glucose + oxygen --> carbon + normal water + energy). It arises in substantial concentrations inside the tissues inside our body. It then diffuses inside the circulatory program where it might be carried inside our blood))3. The moment this bloodstream combines with water after which dissolves, Carbonic acid (hydrogen carbonate ions + hydrogen ions). will be formed in debt blood skin cells which are in that case carried in the plasma. ((CO2 + INGESTING WATER --> H2CO3))1. This blended carbon dioxide can simply change the ph level of normal water. This carbonic acid can be toxic to cells and so, whenever carbon dioxide is developed, the body attempts to get rid of that before chemical activities are disturbed.
ph level is a measurement of how acid or fundamental a solution is definitely. Water with pH lower than 7 is recognized as acidic and higher than six is known as standard. The secure levels of ph level in water to drink is six. 5 -- 8. 5. Pure water has a ph level of 7 which means there is an equilibrium of positive hydrogen ions and negative hydroxide ions. ((When the pH of water is under 6. a few, the water can be soft and corrosive. This kind of water can damage metal pipes and when applied, it can stain clothes, have a sour taste and damage basins. Water having a Ph higher than 8. five is considered hard. This water does not pose a well being risk, although can discoloration dishes and utensils))4. When Ph of water can be low there could be many consequences and results. ((Even a moderate decline in pH of water could affect the seafood egg hatching success; annoy fish and worst of all, damage membranes. Water with a pH beneath 4 or higher than 15 is deadly. It will most likely kill majority of sea creatures. Amphibians are at risk when the pH of water is low. If the pH of water is low, heavy metals will dissolve more readily which will make them more toxic. When ever pH can be high, ammonium in water is changed to toxic phosphate. )) 2
The dissolved Co2 will cause the pH of water to diminish.
While conducting this experiment a few safety measures must be consumed in order to prevent any damage to equipment or injuries. As well anything that creates a danger should be dealt with immediately. Some of the dangers and dangers of conducting this kind of experiment as well as how to prevent them include:
Beakers are made of glass and are risky if damaged. In order to prevent them disregarding, they must be handled with outmost care.
If the water in the beakers is spilt, this will present a danger as possible slip and injure yourself. Therefore the normal water must be dealt with with care and safety precautions has to be taken.
1- To plan, design and style, choose tools and perform a first-hand investigation to demonstrate the result of different Carbon Dioxide around the pH of water.
2- To test the hypothesis that dissolved Carbon Dioxide will cause the pH of water to diminish.
Beakers (same size)
Distilled drinking water
ph level probe
Basic safety glasses
Safely spectacles and hand protection were worn
20mL of limewater broken into and observed to verify that it converts milky to become assured that Carbon Dioxide was really being exhaled.
Carefully 50mL of drinking water was poured into all the 4 test tubes.
The 4 beakers were accumulated (one since control and 3 intended for...
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