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Problem- A solution buffered at a pH of 5.00 is needed in an experiment. Can we use acetic acid and sodium acetate to make it? if so, how many moles of NaC2H3O2 must be added to 1.0L of a solution that contains 1.0 mol HC2H3O2 to prepare the buffer? Ka of acetic acid is 1.8x10^.5
Express your knowledge to solve the above question
Compute the preparation scheme to prepare these solutions using the subsequent concentrations specified for NaCl. 0; 0.002; 0.004; 0.006: 0.008; 0.01; 0.03; 0.05; 0.08; 0.1; 0.2M. Explain what would be the ionic strength for these solutions
Assume that fructose is a molecular solid and does not ionize when it dissolves in water.
A metal, M reacts with sulfur to form a compound having the formula M2S. 8.38 g of the metal produces 9.95 g of the compound. Explain what is the molar mass of the metal?
Calculate the change in pH to 0.01 pH units caused by adding 10. mL of 2.72-M NaOH is added to 490. mL of each of the following solutions. a) water pH before mixing
For example if your compound is water and you have the information the boiling point, Tb=(99.98 C), the enthalpy of vaporization= (40.65 kJ/mol) and the molar mass= 18.02g/mol.
What is the density of Ar gas (molar mass, 39.95 g mol-1) at 21.2oC and 1.10E2 kPa? Give your answer in grams per litre (g L-1), accurate to three significant figures
Problem- A.) Write out the dissolution reaction and calculate the Ksp for lead(II) phosphate which has a molar solubility of 6.2x10^-7 M. B) Calculate the molar solubility of solid calcium phosphate (Ksp= 1.3x10^-32) in 0.2 M sodium phosphate.
Write down the secular determinant for the allyl radical, Ch2=CH-Ch2, and estimate the pi-binding energy.
Determine the limiting reactant and also calculate how much of the gas is produced?
Two substances are mixed together. Explain how the observer could determine if this reaction is just a mixture or an actual chemical reaction. Give an example of two reactants that would form a mixture and two reactants that would form a chemic..
Show the products of the reactions of these carboxylic acid with PBr3/Br2 before and after hydrolysis. a) Pentanoic acid
a 0.0750 m solution of a monoprotic acid is known to be 12.4 ionized. what is the ph of the
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