. AIM :. To Determine which Antacid could Neutralize the most Stomach Acid. (Chemistry Project) Project Prepared By: Name Class- Roll no. INDEX page no. Objective 3 Introduction 3 Acids 4 Stomach Acid
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BUFFER SOLUTION (ACID) An acidic buffer solution is simply one which has a pH less than 7. Acidic buffer solutions are commonly made from a weak acid and one of its salts - often a sodium salt. Objectives: 1. Measure the pH of the unknown solution first with indicators and then with pH paper. 2. compare the buffer solution with both a strong acid and a weak acid materials: 2 30 mL beakers 2 100mL volumetric flask 1 10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL graduated
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Strength Calcium Antacid Tablet • Goggles • Thymol Blue • Mortar and Pestle • Beakers • pH probe • Clamp • Retort Stand • Pipette-Graduated • Hydrochloric Acid(HCl) • Distilled Water • pH 4 solution Procedure- 1. All the materials were gathered/assembled. 2. The clamp was secured onto the Retort stand‚ 3. The pH probe was then attached to the clamp and secured tightly 4. With the pH 4 solution‚ the pH probe was calibrated properly according to SNC2D0 standards 5. One antacid tablet was
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The Counseling Team International 1881 Business Center Drive‚ Suite 11 San Bernardino‚ CA 92408 (909) 884-0133 www.thecounselingteam.com STRESS INDICATORS QUESTIONNAIRE This questionnaire will show how stress affects different parts of your life. Circle the response which best indicates how often you experience each stress indicator during a typical week. When you have answered all the questions add the point totals for each section. 5- Almost Always (on five days a week) 4- Most of the time
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AP Chemistry Chapter 17 Additional Aspects of Aqueous Equilibria Chapter 17. Additional Aspects of Equilibrium Common Student Misconceptions • • • • • Students often believe that the pH at the equivalence point for any titration is 7.00. In terms of problem-solving skills‚ this is probably the most difficult chapter for most students. Students tend to find buffers particularly difficult to understand. Students often forget to consider volume changes that occur when two solutions
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Chemistry 1211K Lab Report Briana Limage Drawer #D20 Tuesday December 2‚ 2014 Lab Day and Time: Tuesday 2-5 Unknown # 4224034-DF14 Introduction The purpose of this semester long experiment was to determine an unknown organic acid. An organic acid is an organic compound with acidic properties. A base reacts with acids to form salts. Titrations are used to determine the concentration of unknown substances. The purpose of the KHP experiment was to determine the molarity of NaOH. HCl
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Ph Lab Report Bryon Kim 123013 B(2) Biology Background information/Research PH paper (litmus paper) determines how acidic or how basic a substance is. The paper changes color accordingly to color code on the pH scale. The pH scale starts from 0 to 14. The lower the number the more acidic it is. Zero is the most acidic‚ and 14 is the most basic while 7 is the neutral number for example water. Examples of an acid is lemon juice or multi purpose cleaner. Examples of a basic substance is shampoo or liquid soap
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How do Demographic Indicators Assist Geographer In Identifying Levels of Development for a Country or Region? Every time I hear about world news‚ it always tends to have to do with a country’s wealth‚ health‚ and social status. But what really defines these countries as wealthier? What are the things that gives someone in America a better life than someone in Africa? These factors can range from some qualities like GDP‚ Urbanization‚ Life Expectancy‚ Per Capita Income‚ and Fertility Rates among
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Observations of Chemical Changes Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic‚ acidic‚ or remain neutral when mixed with other chemicals. 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.
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Worked solutions to student book questions Chapter 4 Analysing acids and bases Q1. Antacid tablets should normally be chewed before they are swallowed. Why? A1. Antacid tablets are normally chewed to provide a larger surface area for faster reaction with stomach acids. Q2. A laboratory test to determine how much hydrochloric acid is neutralised by a brand of antacid does not give a complete picture of its effectiveness in the stomach. What other factors might be important? A2. Other factors to
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