on pH. It is to determine the concentration of an unknown acid by using the chemistry of the acid-base titration to calculate the concentration of the unknown acid. In order to calculate the concentration of the unknown acid you have to use a pH indicator‚ which will change color based on the pH of the acid. Procedure This is the equipment needed in this experiment: 100 mL beaker general purpose thermometer in oC pH meter 2. Obtain a sample unknown that you wish to determine the pH of‚ and
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Title: Acetone Lab Purpose: Use Table M and various indicators to determine the pH of acetone Equipment: Test tubes‚ test tube rack‚ acetone‚ various indicators‚ tweezers Procedure: 1. Fill each test tube with a few drops of acetone 2. Put 2 drops of an indicator into 1 of the test tubes 3. Record color change 4. Determine the pH range based on the color change using Table M and record data 5. Repeat for each indicator 6. To test litmus‚ dip red and blue litmus into acetone and determine
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Full Lab Report Experiment #2: Acid-Base Titration Lab Description: Acid-Base Titration Introduction In this lab exercise we will evaluate the effectiveness of several indicators for the determination of the point of completion of a specific acid-base neutralization reaction. We will also determine the unknown concentration of the strong base NaOH by its reaction with a known amount of the weak acid‚ potassium acid phtalate (HKC8H4O4‚ abbreviated KHP). This will be accomplished using the titration
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seven is basic. Acid-base indicators show whether the solution is acidic or alkaline. They do this by reacting with the solution‚ seen as a color change‚ as the concentration of hydrogen (H+) or hydroxide (OH-) ions changes in an aqueous solution. Different indicators change different colors depending on what they are mixed with and the acidity or alkalinity of that solution. In the Reference Tables for Physical Setting/CHEMISTRY‚ table M shows the name of the indicator‚ the approximate pH range
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Title : Measuremnt of pH With Indicators Aim : 1.To investigate concentration of hydrogen ions in hydrochloric acic and colour changes of indicators 2.To determine standard solutions and the unknowns Variables Independent variable : Concentration of hydrogen ions in hydrochloric acid.The presence of hydrogen ions is varied by using 5 different concentration of hydrochloric acid of 0.1mol/L‚0.01mol/L‚0.001mol/L‚0.0001mol/L‚0.0000mol/L Dependent variable : Colour changes of indicators
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□ The end point in a titration is often signaled by the color change of an indicator and occurs just slightly past the equivalence point. □ An indicator is a substance (weak acid) that has distinctively different colors in acidic and basic media. *Not all indicators change color at the same pH‚ so the choice of indicator for a particular titration depends on the strength of the acid and base. An indicator is chosen whose end point range lies on the steep part of the titration curve
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adjusting the pH of the sample (i.e. Dove shampoo) to 5. In colorimetric determination‚ different acid-base indicator were added to different buffer solutions‚ and the pH where the change in colour were seen were noted. The data shown later would show a different change in colour for every pH‚ which indicates that the hydrogen or hydroxide ions change in an aqueous solution due to the pH indicators. !! !I. ! INTRODUCTION pH is often heard and always computed every Chemistry class but is it only important
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ACIDS 1. Acids are chemicals which will turn litmus paper red. Litmus is a colored Chemical which can change from red to blue and back again. Which colour it is Depends upon the concentration of Hydrogen ions. If the concentration of Hydrogen ion is higher than it is in pure water then the litmus will turn red. If it is lower than in pure water the litmus will turn blue. 2. An acid is a substance that turns blue litmus paper red acids can‚ be identified due to specific
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the various petrol pumps at the time of filling of tanks. Key words: Liquid Level Detector Gauge sensor Fuel Meter INTRODUCTION circuit‚ the resistance increases and current reduces. On the other side of the fuel gauge‚ there is an indicator or gauge that displays information about fuel levels to the driver of a car. This can consist of either a bimetallic strip or a microprocessor connected to the circuit in the sensing unit. As resistance changes in the circuit‚ current increases
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