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What role do the stability constants of the various complexes play in the spectrophotometric analysis of fluoride ion using the SPADNS colourimetric method?
Write the structural formula of the main organic product for the following reaction between an alcohol, tosyl chloride, and then a nudeophile.
Calculate the pH of the buffer after the addition of 1.5 g of HCl (36.5 g/mol). (Ka of HNO2 = 7.1x10^-4.)
literally the ph measurement is the electrochemical cell potential measurement. can one use a normal multimeter to
Next, you add 1.00 mL of 1.35 × 10-6 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form LH .MOPS Buffer Ka = 6.3 × 10-8. Lidocaine Kb = 8.7 × 10-7, calculate the fraction of lidocaine prese..
At what Kelvin temperature will the reaction proceed 3.50 times faster than it did at 351 K?
A flask contains 0.350 grams of liquid Br( bromine). calculate the number of (Br)bromine molecules present in the flask
Explain how many grams of sodium dichromate, Na2Cr2o7, must be added to a 100mL volumetric flask to prepare .025M Na2Cr2o7 when the flask is filled to the marker with water. Compute the concentration of each ion in solution.
Selenious Acid, H2Se)3, is primarily used to chemically darken copper, brass, and bronze. It is a diprotic acid with the following Ka values: Ka1 =2.7x10-3 and Ka2= 5.0x10-8.what is the pH of a 2.89 M solution of selenious acid?Estimate [HSe)3-] a..
Would fischer esterfication be a useful method for converting fumaric acid into its mono methyl ester. Briefly define how this could be done or why it would not work.
An oxide of copper is decomposed forming copper metal and oxygen gas. A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the copper oxide?
If the rate increases by a factor of 10 as the temperature increases from 35 °C to 70°C, what is the activation energy for the reaction?
What is the formula that relates the temperature change obsereved in a substance with the energy released or abosrbed? when you measure a temperature rise during a chemical reaction, is the reaction endothermic or exothermic?
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