Acid dissociation constant

Specimen Collection In this analysis the type of urine specimen used is random urine which is collected any time for routine analysis. A routine voided urine specimen requires no patient preparation and is collected by having the patient urinate into an appropriate container. Normally the patient requires no assistance other than clear instructions. For other collection procedures, the patient may require assistance depending on the patient’s age and physical condition or the technique to be used

For this experiment, The scientists are testing the pH level of salt ( NaCl ) by putting water, measuring the pH, and then adding salt and checking the pH after. The scientist want to evaluate how acidic or how much of a base the salt is. The independent variable would be the salt. The dependent variable would be the pH level. The control would be the pH before salt is added. If the scientists add salt to pure water, then pH level of the water will drop turning the water acidic. In the experiment

making a solution of a base or an acid is H+ or a proton. The pH scale measures the acidity or alkalinity of a solution. On the pH scale there are numbers that indicate how strong or weak the acid or the base is. On the pH scale the numbers range from 0-14. 0 - 2 stands for a strong acidic, 3 - 5 for a weak acidic, 6 - 8 means the solution is neutral, 9 - 11 for a weak base, and 12 - 14 for a strong base. There are three theories that are used to define a base and an acid. The first theory is the " The

analyte. An equivalence point in a titration is when the moles of the titrant equal the moles of a analyte. One way to find the Equivalence point is through the pH indicator. This is an indicator that changes color when there is a chemical change. An acid and base indicator changes color depending on what the pH is. There are also Redox

TDS (total dissolved liquids) in both gunpowder green tea and caffeinated black coffee. The independent variables are the caffeinated beverages and the dependent variables are the pH and TDS levels of the gunpowder green tea and black coffee. The constants are the way we measure the pH and TDS of the caffeinated beverages

determined the equilibrium concentrations of products and reactants in several organic reactions, involving acetic acid, methanol, methyl acetate, and water. The acid and alcohol react to form an ester and water, and the ester hydrolyzes to produce the acid and alcohol3. These reactions continue in the forward and reverse directions until equilibrium is achieved. The equilibrium constant, K, is a measure of the relation of the activities between products and reactants in a reaction, in which the chemical

The statement, the stronger acid has a higher pH than the weak acid , is proven to be false. pH is a measurement of the concentrations of hydrogen and hydroxide ions. To defined the pH we used the formula -log10[H+]. With this example H+= 1.0e^-2 equal the pH of 2 and H+=1.0e^-4 equal the pH of 4, we can see that the lower the pH values the concentration of hydrogen ions is higher when the pH goes up compare to when H+ decrease. HCl is a strong acid in which it completely ionize in water and

amounts of acid or base is added.There are two types of buffer solutions.They can either be acidic or alkaline.An acidic buffer is made by mixing equal amounts of a weak acid and its conjugate base.Similarly, an alkaline buffer has equal amounts of weak base and its conjugate acid. Alka seltzer acts as an antacid. It uses sodium hydrogen carbonate to neutralise excess hydrochloric acid in the stomach and thus relieves heartburn. Here, the bicarbonate reacts with a proton(from excess acid in the stomach)to

there is a large amount mineral reserves, unlike when it is 6.25 to 6.75 which indicates that there is an excess of acid and that the there is a very low amount of mineral reserves and that on its own is not healthy. The saliva contributes to supporting the pH by two components. To begin with, the flow of saliva kills starches that could be utilized by microorganisms and evacuates acids created by microscopic organisms (Baliga et al, 2013). Second, acidity from beverages and nourishments, as well as

In the first experiment my partner and I selected to produce a buffer that contained 35mL of .1M sodium acetate with 10 mL of .2M acetic acid with the excepted pH of the solution to be 5. We used C1V1=C2V2 to first calculate the theoretical concentration of both the weak acid and the weak base in the buffer solution. Then using the theoretical concentration and the Henderson- Hasselbalch equation we were able to calculate the excepted pH. After calculating the pH we then measured the experimental