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1. A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution. The Ka for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. 2. Calculate the pH when 27.6 mL of 0.048 MHCl is added to 100.0 mL of the above buffer.
The titration involves the formation of a stable, neutral complex: Hg2+ (aq) + 2 SCN- (aq) = Hg(SCN)2 (aq) A)How many mmoles of mercury are in the sample
camphor was reduced by an excess of sodium borohydride to make 1.3 g of isoborneol. Calculate the theoretical yield and percent yield for this reaction.
A gas has a volume of 50.0 cm3 at a temperature of -73 C. What volume would the gas occupy at a temperature of -123 C if the pressure stays constant?
Which of the following will precipitate as chloride salts: Ag+, Pb2+, Ca2+, K+, and Cu2+?
What is the total pressure of a mixture of gases made up of CO2, O2, and H2 if the partial pressures are 2.2atm, 400mmHg and 112kPa respectively.
The equation for the complete combustion of acetylene, C2H2. You do not need to include any phase symbols or energy changes.
Nitrating Acetanilide- draw the resonance forms for the arenium ion formed during your reaction (nitroacetanilide)
The freezing point of the solution decreases by 0.905 ° C compared to that of the pure solvent. What is the molar mass of the unknown solid. The freezing point depression constant for benzene is 5.46° C/m.
calculate the actual yield of magnesium nitrate formed from 113.9 g of magnesium and excess copper(II) nitrate.
The mass spectrum of an organic compound shows the relative abundances of M to be 58.09% and M 1 to be 15.08%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound
Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular. Explain the decreasing melting point from NaF to Nai.
Calculate the concentrations of all species in a 0.370 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid
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