2 II.1. Apparatus and instruments II.2. Materials II.3. Procedure II.4. Observation III. Result and Discussion II. Experimental : II. 1. Apparatus and Instruments :Beakers‚glass rod‚burner‚digital PH meter . II. 2. Materials :Different varieties of tea leaves.Following codes are used for different brand. Brand Code 1. T1 2.
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single sensor channel‚ and were difficult to assemble due to the use of discrete components. The measurement parameters consisted of temperature‚ pH or pressure‚ and the first attempts of conducting real-time noninvasive physiological measurements suffered from poor reliability‚ low sensitivity‚ and short lifetimes of the devices. The first successful pH gut profiles were achieved in 1972‚ with subsequent improvements in sensitivity and lifetime. Single-channel radio telemetry capsules have since
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phenolphthalein were added. Moreover‚ the burette was rinsed with deionized water‚ then with NaOH solution. Then‚ it was filled with 50 mL NaOH. The KHP solution was titrated to the endpoint using NaOH. The results were recorder‚ and the pH was measured using the pH meter. Finally‚ this process was repeated two more times‚ and
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pH In chemistry‚ pH is a measure of the acidity or basicity of an aqueous solution. Solutions with a pH less than 7 are said to be acidic and solutions with a pH greater than 7 are basic or alkaline. Pure water has a pH very close to 7. pH is defined as the decimal logarithm of the reciprocal of the hydrogen ion activity‚ aH+‚ in a solution. Universal indicator consists of a mixture of indicators such that there is a continuous color change from about pH 2 to pH 10. Universal indicator paper
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find the pKa of an unknown‚ pH meters are used during titrations to measure the potential difference in a solution by measure the difference of hydrogen-ion activity in a solution and reporting the pH. The pH is then plotted against the volume of solution added which provides the titration curve of a substance. From the titration curve information can be gathered about how many protons were dissociated and the equivalence point. pH=pKa+log([H]/[OH] ) pKa=pH-log([H]/[OH] )
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precautions 7. Enhances the creativity of students. 8. Enhances and grant them job opportunities. 1. BACKGROUND OF ASA DAM WATER PLANT The existing water supply‚ completed in 1952‚ was designed for an initial output of 3‚100 cubic meters per day). Before the coming into existence of Kwara State in 1967‚ it was already known that the supply had become inadequate. As a consequence‚ a small expansion programme was completed by the Interim Administrative Council.
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Introduction The pH‚ or the concentration of the hydrogen plus ion [H+]‚ is one of the most critical parameters in predicting if a system will corrode‚ or determining why a system is corroding. PH is defined as the negative log base 10 of the hydrogen plus ion concentration in the units of moles per litre. Procedure pH MEASUREMENT OF UNKNOWN SOLUTIONS Obtain the following apparatus from the equipment menu: 100 mL beaker general purpose thermometer in oC pH meter Obtain a sample
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4 Titration Curve of an Amino Acid pH Simple amino acid Acidic amino acid Basic amino acid 7 OH- equivalents Objectives: A) To determine the titration curve for an amino acid and B) to use this curve to estimate the pKa values of the ionizable groups of the amino acid and the amino acid’s pI. Introduction: A titration curve of an amino acid is a plot of the pH of a weak acid against the degree of neutralization of the acid by standard (strong) base. Consider the ionization
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each region to the pH results obtained. - There are four significant regions in each titration curve‚ namely the initial‚ pre-equivalence‚ equivalence‚ and post-equivalence points. These points are named according to its position relative to the equivalence point. The equivalence point signifies the volume of titrant at which the solution becomes neutral. This is represented in the graph as the drastic change in pH‚ first with a sudden increase and a sudden decrease of pH. At the initial point
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ends up polluting waterways; presenting a hazard to humans‚ fauna and flora. It not only encourages pests to spread germs and diseases‚ but also affects the water quality and the organisms living in them. The pH (potential of Hydrogen) and EC (Electrical Conductivity) can also affect the creek. PH is a measure of the
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