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Question- Calculate the pH for each of the following cases in the titration of 25.0ml of 0.160M pyridine C5H5N(aq) with 0.160M HBr(aq):
1) Before addition of any HBr?
2) After addition of 12.5 ml of HBr?
3) After addition of 16.0 ml of HBr?
4) After addition of 25.0 ml of HBr?
5) After addition of 32.0 ml of HBr?
Give reasons or calculations to sustain your answer.
the temperature of a 2.0 liter sample of heluim gas at STP is increased to 27 celsius and the pressure is decreased to 80.0 kPa. what is the new volume of the helium sample.
How many grams of sodium lactate should be added to 1.00 L of 0.150 lactic acid ( or ) to form a buffer solution with = 4.10? Assume that no volume change occurs when the sodium lactate is added.
Question- Given the following ?H and ?S values, determine the temperature(s) at which the reactions would be spontaneous
A 20.0 mL sample of gastric juice was taken from a patient suspected of having hypochloridia (low stomach acid). The sample was taken several hours after a meal so there was no ingested food or drink
Explain what volume of H2O gas is produced at 150oC and 1.00atm of pressure from the reaction of 1.12 L of H2 and 1.12 L of O2, at the same pressure and temperature
The equilibrium constant, Kp, for the following reaction is 9.4 at 500.0 degrees C. A mixture in a container at this temperature has a total pressure of 2.0 atm. The molar percent of N2O4 is 12.0% and NO2 is 88.0%.
Dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
Draw the flow of e- and the products of the Methoxide Ion and water including formal charges on all compounds.
Calculate the mass of potassium hydrogen phthalate, KHC8H4O4 (MM is 204.2 g/mol) needed to react completely with 20 mL of 0.1 M NaOH solution.
How many milliliters of boiling water are required to dissolve 25g of phthalic acid? If the solution were cooled to 14oC, how many grams of phthalic acid would you recrystallize out?
Problem- In preparing your soap, you dissolved 12.5g of sodium hydroxide in 32.0ml of de-ionized water. Your product was a solid cake of soap. 1) What happened to the water you added when preparing your soap during the course of the experiment
Titration will require more moles of base than acid to reach the equivalence point. E. titration will require more moles of acid than base to reach the equivalence point.
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