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The epidemiology of the spread of disease through bodily fluids can easily be demonstrated using small cups of water given to several people, one of whose contains the base sodium hydroxide (NaOH) which appears no different than water itself. To simulate interaction of bodily fluids, each person exchanges the liquid in their cup with three other individuals. After the exchange, the indicator phenolthalein is added to each person's cup and the appearance of bright pink indicates that the fluid in their cup was exchanged with the "diseased" fluid containing sodium hydroxide. To complete the demonstration, hydrochloric acid is added to the bright pink cups to simulate "a cure" until the liquid turns clear again.
Explain what chemical reactions occurred, what was the indicator detecting, and why did the color go away after the addition of hydrochloric acid. How does this demonstration relate to the titration performed in the lab?
what is the equation for ninhydrin test of egg white?also for the ninhydrin test of aspartame? what is the chemical
The preparation of chlorobenzene by the reaction of chlorine with benzene occurs by the reaction C6H6 (l)+Cl2 (g)- ->C6H5Cl (l)+ HCl (g). If 52.6 g of benzene reacts with an excess of chlorine to give 51.6 g of chlorobenzene, what was the percent ..
Explain what is the maximum amount of product that can be formed from 3CaCO3 + 2 FePO4--->Ca3(PO4)2+Fe2(Co3)3
if you assume that the naoh which you will prepare for standardization is approximately 0.12 m calculate the number of
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A cell composed of a platinum indicator electrode and a silver-silver chloride reference electrode in a solution containing both Fe2 and Fe3 has a cell voltage of 0.731 V.
calculate the enthalpy change for the following reaction.4 chcl3 l 5 o2 g ---gt 4 co2 g 2 h2o l 6 cl2 gsubstance
what is the pH solution if 100 mL of the solution is .15 M acetic acid CH3CO2H and contains 1.56g of sodium acetate, CH3CO2Na? Ka=1.8x10^-5
How would you prepare 25.0mL of 2.0M sodium phosphate from solid sodium phosphate. Na3PO4
how many liters of oxygen gas can react with 84.0 grams of lithium metal at standard temperature and pressure?4li o2
if 4.0g H2 react, how many grams of NH3 will be formed?
Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid. It has pKa1=2.36 and pKa2=9.60
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