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The point in the titration when buffering is least efficient occurs at the stoichiometric point, or equivalence point, in the reaction. This point is often called a point of inflection because there is a shift in the curvature from convex to concave or from concave to convex at that point.
Are there other inflection points in the NaOH added to H3PO4 titration curve
Ethers can be prepared by SN2 attack of an alkoxide ion on a alkyl halide. Suppose you wanted to prepare cyclohexyl methyl ether, shown below, using the SN2 reaction
In the liver, which one of the following is part of the pathway whereby increased glucagon causes a decrease in the glycolytic pathway? activation of the fructose-2,6-bisphosphate and inhibition of phosphofructokinase-2
A student is asked to prepare a 1 L buffer by adding 0.11 M sodium acetate to 0.09 M acetic acid solution. What is the pH of the buffer? Ka for acetic acid is 1.8 x10 -5
A fossil was analyzed and determined to have a carbon-14 level that is 54.0 that of living organisms. How old is the fossil
In its vibration-rotation spectrum what is the meaning of the P,Q and R branches. What is the J value of the lower rotational state in the R branch that gives the line of maximum intensity
If an insufficient amount of liquid unknown had been used, how would this have affected the value of the experimental molar mass?
atomic masses. 6 pts an element has two naturally occurring isotopes isotope a has a mass of 120.9038 amu and a
You are required to prepare a review-type essay on Electrochemistry. Insert your completed review essay into a soft-bound cover with a clear plastic front.
when an irregularly shaped chunk of silicon weighing 8.763 g was placed in a graduated cylinder containing 25.00 mL of water, the water level in the cylinder rose to 28.76 mL. What is the density of silicon in g/cm3?
Calculate the nonstandard emf for each of the following reactions if the concentration of each of the ions in these reactions is 0.0004 molar and everything else is standard (use 298 K for the temperature, R = 8.314 J/mol-K, and F = 96,485 C/mol)
A dry cleaning fluid composed of carbon and chlorine was found to have the composition 14.5% carbon and 85.5% chlorine. Its known molar mass is 166 g/mol. Draw the Lewis structure to represent the compound.
What volume of pure oxygen gas measured at 740 torr and 27 degree C will be obtained when 15.0 g of potassium chlorate are decomposed
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