How Can Alka Seltzer Act As A Buffer Against Acid Rain

Marwah Alabbad Post lab 10/21/15 Question 1: 1. Experiment 1: Number of trails NaOH concentration (M) Volume of HCl solution (mL) Initial volume of NaOH(mL) final volume of NaOH(mL) The volume of NaOH to titrate HCl (mL) Concentration of HCl (M) 1st 0.1023 25.0 10.05 36.12 26.07 0.085 2nd 0.1023 25.0 5.74 31.40 25.66 0.105 3rd 0.1023 25.0 9.84 35.52 25.68 0.105 First trail calculation: 0.02607L× (0.1023mole NaOH/1L)×(1 mol of HCL/1 mol of NaOH)×(1/0.025)= 0.085M of HCl

A buffer solution minimises change in PH of a solution when small amounts of acid or alkali are added to the solution, with an an acidic buffer solutions maintaining a PH<7 (ChemGuide, 2017). It works through an equilibrium, so if the concentration of H+ or OH- are changed, equilibrium will shift to oppose this change and return solution PH to original value. The Alka Seltzer mixture contains an excess amount of the bicarbonate ion which is vital for the buffering action taking place within the solution. This is because the excess bicarbonate ion present, allows the solution to act as a buffer as it’s able to react with small quantities of acids and bases added to the solution, therefore resisting a change in PH by neutralising them.

In the second portion of this experiment we will keep the temperature constant and divide the ½ tablet of Alka- Seltzer into 2 pieces ,3 pieces and an unbroken ½ tablet. It is my belief that Alka-Seltzer

In the round-bottom flask (100 mL), we placed p-aminobenzoic acid (1.2 g) and ethanol (12 mL). We swirled the mixture until the solid dissolved completely. We used Pasteur pipet to add concentrated sulfuric acid (1.0 mL) to the flask. We added boiling stone and assembled the reflux. Then, we did reflux for 75 minutes.

I organized four different tests; pH paper, alkalinity tests, the number of rocks neutralizing acid, and the number of rocks that don’t neutralize acid. The average for pH paper was seven. The pH is the numeric scale used to specify the acidity or alkalinity of an aqueous solution. The pH scale measures acidity and alkalinity. the pH scale goes from zero, which is an acid reading, to fourteen, which is an alkaline reading.

Within the chemical reaction are two different parts, the reactant and product. The reactant, “an initial substance in a chemical reaction” was the alka-seltzer tablets, before they were placed into the water. For instance, when the untouched alka-seltzer was then placed into the water, it formed the product, “the final substance in the chemical reaction” (Tro, 2018). Now, by looking at how the water, or the solvent, dissolved the alka-seltzer tablet, it then created a solute, or a “dissolved substance” (Shuster, 2014). Another example, on a personal level, of a chemical reaction was, whenever I had a sore throat, as a child, my

Weighed 1 gram of NaC2H3O2 and mixed it with ionized water. Boiled 12 mL of 1.0M Acetic Acid added into a beaker containing the sodium carbonate on a hot plate until all the liquid is evaporated

Introduction: In this task I will be researching the effect that acid rain has on the rate of plant growth. Acid rain is any type of precipitation with a high pH, with high levels of nitric acids. The reason why I had chosen this topic was because acid rain seems to have a great effect on the effect of plant growth, and plants play a very important role in our ecosystem. Acid rain is a major problem in our environment when we are not able to neutralize the acidity.

INTRODUCTION Acid rain or also known as acid deposition are divided into two that is wet deposition and dry deposition. Wet deposition is what always be called as acid rain. Acid rain is a term that any form of precipitation with acidic component, such as sulphuric or nitric acid. Example of acid rain form were rain, snow, fog, hail or even dust that is acidic.

At the bottom, it ranges from 4 celsius and 22 at the top. The pH changes because of topography and plants. The movement of water depends on the wind or draining

Chemistry IA Background information: Introduction: Electrolysis it’s a chemical process that when you pass an electric current into a solution or a liquid that contains ions to separate substances back to their original form. The main components that are required for electrolysis to take a place are:  Electrolyte: it’s a substance that when dissolved in water it ionize and then it will contain free moving ions and without these moving ions the process of electrolysis won’t take place.  Direct current (DC): This current provides the energy needed to discharge the ions in the electrolyte  Electrodes: it’s an object that conducts electricity and it’s used in electrolysis as a bridge between the solution and power supply. A great example

The main way humans release Sulphur into the atmosphere is via the use of fossil fuels and processing of metal. “One-third of all sulfur that reaches the atmosphere—including 90% of sulfur dioxide—stems from human activities” (The Environmental Literacy Council., 2015). Sulphur reacts with other chemicals in the atmosphere to produce small particles of sulfur salt, which comes back down to earth in the form of acid rain. The biggest effect acid rain has on the Earth is aquatic. Acid rain gets into lakes, rivers, and other bodies of waters, making them acidic (National Geographic., n.d.).

Some people call it acid deposition because they say it is a more precise name due to the fact that acid rain isn’t only rain, it can fall as rain, snow, sleet, hail and anything else. Acid rain has been formed because as we release harmful gases into the atmosphere, we are lowering the pH of precipitation, creating acid rain. Acid rain can kill small organisms such as trees and fish which destroys ecosystems. Although acid rain is not known to affect humans immensely, it can however, cause health issues usually lung

The chemical equation for this experiment is hydrochloric acid + sodium thiosulphate + deionised water (ranging from 25ml to 0ml in 5ml intervals)  sodium chloride + deionised water (ranging from 25ml to 0ml in 5ml intervals) + sulphur dioxide + sulphur. As a scientific equation, this would be written out as, NA2S2O3 + 2HCL + H2O (ranging from 25ml to 0ml in

The effects of Acid rain as Hai-Ying Liu(15/01/2015, ) says are the direct effects of So2, extremely acidic mist or rain events or other pollutants. It also has its effects on the soil which is likely to have negative effects on forest growth in China. Defilation is a difficult thing to diagnose as insect attacks play a major role in indicating the climatic stress. Predisposing effects acid rain cannot be ruled out as an additional cause due to the difficulty to