The Effect Of Ph Concentration On The Ph Balance Of Water

During the immersion of the magnesium metal in the hydrochloric acid solution, white bubbles could be seen escaping the surface of the metal as gas was produced during the reaction. Depending on the temperature of the hydrochloric acid and the overall molar concentration, the rate of reaction differed but the same signs were shown. During the reaction between the magnesium metal and higher concentrations of hydrochloric acid, it was observed that the test tube grew quite warm to the touch. As the immersed magnesium strip sank down, it appeared coated in a layer of white bubbles that fizzed like a carbonated drink. In the lower concentrations of hydrochloric acid, the strip spent some time floating at the surface of the solution in the test tube, later sinking down to the bottom as the

Procedure: In this experiment, various chemicals were mixed together, to determine a reaction. Using two drops from chemical 1 and two drops of chemical two, unless otherwise stated, then recording the type of physical reaction or color changes that occurred.

A. How did the experiment in Part I demonstrate surface tension? Use your experiment observations when answering this question.

In this experiment, the hypothesis was that if living cells in beef liver is related to the pH of water, then the pH of liver will respond more like water when acid or base is added. According to the data shown above, the pH level declined (from 8 to 1) with the increase number of HCL (acid) drops added to tap water. Whereas the pH level increased ( from 8 to 13) with the increase of NaOH (base) drops added to the tap water. In contrary, the pH recorded in liver did not show this similar pattern as the tap water at all, in fact it showed a constant pH of 7 as drops of HCL and NaOH were added increasingly. The data for liver showed a slight decrease and increase in pH when acid and base was added beyond 20 drops, but was not as significant as tap water. Thus the hypothesis was refuted.

About 80 mL of HCl was obtained and mixed with phenolphthalein. Using a LabQuest unit and Gas Pressure Sensor kit, the HCl mixture was added to the flask with the magnesium ribbon and allowed to react. When reaction was complete, the change of temperature and gas was recorded. This procedure was repeated for different masses of magnesium ribbon (masses found on page 89 of the lab manual). After the completed procedure, moles of H₂ produced in each trial were calculated. (The actual procedure can be found on pages 87-89 of the lab manual)

When the zinc was dropped in the hydrochloric acid, the substance began bubbling vigorously, forming a precipitate. Eventually, the zinc dissolved completely. After the lit wooden splint broke the surface of the test tube, there was a loud popping noise. The gas that was released was hydrogen from the acid and the popping noise was a result of the Hydrogen being burned up by the fire creating a small explosion. Two chemical changes occurred in this test: one with the formation of a precipitate (a textbook sign of a chemical change), and the other when the explosion

Abstract: During this lab, the pH of water in soil from a man made garden, a deciduous forest, and a river bank were tested after leaving it in containers for one, two, and three hours, coming out to a total of three trials with three different soils all together. After testing the pH of the water when being added to the soil for the desired amount of time and comparing it to the original water with no soil added, is then when each pH difference was observed and recorded in a a notebook, while pictures were taken of the experiment being conducted.

The objective of the experiment was to observe different reactions with different chemicals. The experiments emphasized on the chemical changes occurring in acids and bases as well as color changes and bubble formations. The experiments allowed for a better understanding of the undergoing chemical changes in mixtures. Some mixtures instantly changed colors while others were transparent or foggy. Some mixtures produced thick color that created solids called precipitates. Mixtures KI + Pb(NO3)2 and NaOH + AgNO3 both produce noticeable precipitates after a while. It was interesting to see the different acidic and base reactions like the fuchsia color formation in NaOH + phenolphthalein.

Most notably the reaction with heat and hot and cold liquid were interesting. Several attempts were made to obtain a smell from the reactions but none were found. When the samples were heated in water several of them had violent and/or sudden reactions.

Change in color once chemicals were combined (experiments b,c,d,e,f,g,h,j,l); Precipitate formation (experiments g,j,l), and formation of gas bubbles (experiment a).

However, with each solution, one metal was not mixed. When mixed with hydrochloric acid, students observed that Magnesium immediately started to bubble, emit gas, and fizz intensely. Fe and Zn bubbled too, however it was much more subtle. Cu appeared to have no initial reaction as it did not emit gas, it did not change color, and it did not fizz or bubble, all of which are signals a reaction is happening. This is because a fizzing or bubbling indicates gas is being released, in this case the gas was H2, and the change of color physically shows something is changing

In the textbook, they described the chemical properties of hydrogen as a gas that when mixed with the oxygen in the air, forms into water vapour. When this reaction happens a characteristic explosive “pop” sound

The purpose of this project was to discover how the pH level affects corrosion rate. The hypothesis was if the pH level affects the corrosion rate, then the lower the pH level is quicker the corrosion rate would be. This will happen because liquids below the pH level of 7 possess stronger acidic attributes. The effect of pH level on corrosion rate was determined by depositing a copper penny in each of three plastic cups, and then three different liquids by their pH levels, were assigned to be displaced into each cup formulating a chemical reaction to be observed. The results collected during this investigation contradicted with the intended result, this experiment was conducted to determine corrosion rate; Dana Puti Vingear (pH level: 4.5)

This paper discovers the water budget for Berkeley, California in comparison to Terre Haute, Indiana. The two cities precipitation differs throughout the twelve month calendar year where many of the heavy precipitation months are totally opposite. Berkeley California’s winters, where the majority of rain occurs and Terre Haute, Indiana where the rainfall is observed as consistently disseminated throughout the year evenly. This paper will also magnify geographic position, climate and elevation in contrast of the two cities that reflects the water budget outlined in Project 1: Water Balance defined in

Have you ever wondered if our drinking water is actually safe to drink? The topic of safe drinking water according to my research isn’t a topic that it’s given that much attention even though there have been events and statistics that have impacted our drinking water. There have been important events such as the chemical spill in Charleston, West Virginia and the ash sludge in Kingston Tennessee in 2008, these kind of events even though they have happen a few years ago still have an impact on our drinking water today. Lauren Russell is an important person because she stated that climate change is another factor that can affect our drinking water because it can impact the quality of the water since climate change is a main world problem it affects everyone 's drinking water. Another big factor of drinking water is what kind of chemicals are in our water that makes it safe for us to drink? I feel like people and I should be informed of the risks that human and natural disasters can do to our sites that we get our drinking water from. And we should also be inform if the chemicals that they put in our drinking water are one hundred percent safe. The reason why I chose this topic is because water is a necessity for every human so if we all get informed about this topic we can enforce better laws that can ensure us the best water quality for us to drink.