PH meter

The determination of the pH of a buffer solution and the pKa for of a weak acid Introduction A practical was carried out to show how the Henderson-Hasselbalch equation works and to apply and hone the skills of pipetting, buffer-making, pH-meter use and graphing. The primary goal of the practical was to determine the pKa value of a weak acid. The Ka is an acid dissociation constant, it is a quantitative measure of the strength of an acid in solution. The pKa is defined as the negative log of…

acidification is, what are the effects of ocean acidification, who are the ones being mostly affected, and how can we resolve this issue. According to NOAA (National Oceanic and Atmospheric Administration), ocean acidification is defined as, “a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere”. Carbon dioxide that has…

Thus, the letters pH stand for “power of hydrogen”. More simply put, pH is the measure of acidity or basicity of the solution. pH is the level of acidity on a scale of 0 to 14 in which 0 is the most acidic while 14 is the most basic. To put it in perspective, the pH value of pure water is 7, the pH value of hydrochloric acid is 0, and sodium hydroxide is around 14. The range of 0 to 14 uses the practical limits that pH puts on some solutions. This means that some solutions…

higher the pH and the greater difference in colour. A discrepancy in the results is that even though each compound making up DeWitt’s antacid powder had a higher reading pH than the one in Nancy’s Home Remedy, more of DeWitt’s was needed to…

in the burette was set up. The pH meter was used to monitor pH of the system when sodium hydroxide was being added. NaOH was added in an increment of 1ml until the pH of the solution reached 4.8. After the solution reached pH of 4.8, NaOH was added in increment of 0.1ml until the solution passed its equivalence point. NaOH was added in an increment of 1ml after equivalence point until there was an insignificant change in solution pH when titrant was added. Values of pH and titrant used were…

that covers two-thirds of our earth’s surface. It is involved in many biospheric processes and the home to many known and unknown organisms. The first few meters of the ocean are an important site for primary production — the conversion of carbon dioxide from a gas into organic carbon. Carbon dioxide plays an important role in determining the pH of ocean water. Over the last hundred years the levels of carbon dioxide in the atmosphere have increased, leading to changes in the chemistry of the…

Experiment 1: Scientific Writing and Integrity Procedure 1. A Molecular Explanation of How the Fog is Produced when Dry Ice is placed in Water The main goal of the article written is to try to figure out where the dry ice-in-water-fog (DIWF) was coming from, for there has been discussion if the fog is coming from the water or if it is coming from the dry ice being sublimed. In their terms, they hope “to describe on molecular terms what may be happening in this demonstration” (644). Researchers…

acetate used for the preparation of nanoparticles ZnO and sodium hydroxide were purchased from Biotech laboratory chemicals company. Ethyl alcohol was purchased from ADWIC company. Dilute solutions of HNO3 and NaOH (BDH) were prepared to control the pH during the experiments. Fig. 1Chemical Structure of (a) Congo Red and (b) Methylene blue dye. Preparation of ZnO nanoparticles (Adsorbent) Zinc oxide (ZnO) nanoparticles was obtained by co-precipitation method as in the following procedure: a…

ocean intrigues me. I have never been one for loving ocean creatures, but I do enjoy learning about the world below us. I found several facts interesting as I read the articles including: how osmosis and salinity functions, how seawater cells move, how pH affects the ocean, how decomposition works in the environment, how upwelling stirs up nutrients, and how water temperature affects organisms. One of the interesting facts discusses why osmosis and salinity impact marine organisms. Osmosis…

how the discharge and pH of a river are related and if there is any correlation between the two. Discharge is the measure of the total volume of water at a certain point in time recorded in cubic feet per second. pH is the acidity or alkalinity of the water measured on a scale from 1 to 14. I was interested to see if river discharge and pH levels had any relation and if the data collected could show any correlation. This information could be used to predict when and where pH levels rise above…