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Oxalic acid (H2C2O4) is a useful primary standard for standardizing solutions such as potassium permanganate (KMnO4). In a particular standardization experiment 29.00g of oxalic acid, is titrated with 243.00mL of permangante solution. What was the concentration (mol/L) of the permanganate solution?
Mg +2HCl-> MgCl2 + H2 what volume of Hydrogen at STP is produced from the reaction of 50.0g and the equivalent of 75 g of HCl? Also, How much of the excess reagent is left over?
Find the pH during the titration of 20.00 mL of 0.1000 M butanoic acid, CH3CH2CH2COOH (Ka = 1.54 x 10^-5), with 0.10 M NaOH solution after the following additions of titrant. a.) 15.00 mL b.) 20.90 mL c.) 27.00 mL
A solution is prepared by dissolving 13.4 g ammonium sulfate in enough water to make 133.0 mL of stock solution. A 11.90 mL sample of this stock solution is added to 52.50 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
Calculate the frequency of each of the following wave lengths of electromagnetic radiation. Part A: 488.0 \rm nm (wavelength of argon laser) Part B: 503 {\rm nm} (wavelength of maximum solar radiation) Part C: 337.1 \rm nm (wavelength of nitrogen ..
A particular diatomic molecule which contains H exhibits a 16.95 cm^-1 spacing between its rotational lines and bond length of 141.5 picometers. Determine the mass (in amu) of the unknown atom in the molecule.
Draw an energy diagram for an exothermic reaction and then draw an enrgy diagram for an exothermi reaction with a catalyst.
Determine what volume would it occupy at zero degree Celsius temperature at same pressure? Express your Answer in units of mL
A room contains 47kg of air. How many kilowatt-hours of energy are necessary to heat the air in the house from 7 degrees celsius to 26 degrees celsius
A sample consisting of 1.00 mol of a van der Waals gas is compressed from 20.0 dm^3 to 10.0 dm^3 at 300 K. In the process 20.2 kJ of work is done on the gas.
describe and explain the possible effect on your results of the following experimental errors or variations. a) you added only enough 3 M H2SO4 to bring the pH down to 4. b)your reaction mixture had an oily layer on top when you added the 3 M sulf..
What effect does adding an enzyme to a reaction have on this? On delta G? What are the roles of delta G in biochemical reactions (list two)?
Write balanced, net ionic equations when the following compounds are mixed. Indicated mixtures where no reaction is expected with the notation "no rxn".
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