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Suppose you wanted to make a pH=4.25buffer. What would be the best acid/base system: acetic acid/acetate or lactic acid/lactate? THe Ka of lactic acid is 8.32x10(exponent -4). Throughly explain your reasoning.
what is the calculated value of partial pressure of o2 in acid mine water of ph 2 in which fe2+=fe3+.
Assuming no heat loss to surrounding, write down the energy balance equation for the system and find out change in internal energy and final temperature.
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide
Mass of nitrogen, Suppose 5.0 liters of Nitrogen (diatomic) is at a temperature of 40 degrees C and a pressure of 1.5 ATM
Determine the vapor P lowering, freezing point depression, boiling point elevation, and osmotic pressure when the sample is dissolved in 10.0 g water
How much energy (in kilojoules) is required to convert 285 ml of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
Calculate the volume (in mL) of a 0.740 M KOH solution that should be added to 4.750 g of HEPES (MW=238.306 g/mol, pKa = 7.56) to give a pH of 7.22.
How much heat is required to melt 15 grams of ice at 0C? How much heat is released when 100 grams of steam condenses at 100C? If a system of ice and water has a mass of 12 grams
A 1.00 g sample of D2O and H2O are reacted with CL2 and HCL and DCL are produced. Then they are diluted with H2O giving a volume of 1.00L. Then 25 mL of the solution are reacted with excess AgNO3 and 0.3800g AgCl precipitate formed.
What volume of NaOH is needed to reach the end point of the titration? What was the initial concentration of HCl?
The absorbance of the solution was 0.685 at 415nm and 0.513 at 455nm. What were the percentages of titanium and vanadium in the alloy?
The iron-chromium voltaic cell utilizes the following reaction with a measured potential of 0.30 V. What is Î"G ° for this reaction?
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