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A buffer that contains 0.511 M of a base, B and 0.897 M of its conjugate acid BH+, has a pH of 9.79. What is the pH after 0.00514 mol of HCl are added to 0.593 L of the solution?
Describe how to prepare 100 ml of 0.200 M acetate buffer, pH 5.00 starting with pure liquid acetic acid and solution contaning ~3 M HCl and ~3 M NaOH
calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of 0.0500 M HCl.
Calculate the volume (in mL) of a 0.680 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56)
What mass of cesium bromide must be added to .500 L of water (d=1.00g/mL) to produce a 0.144 m solution? What are the mole fraction and the mass percent of CsBr
The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility in the following. (a) pure water (b) 0.20 M KBr solution (c) 0.15 M Pb(NO3)2 solution
Would this reaction be an example of saponification? phenyl-COOCH2CH3 + NaOH ----> phenyl-COONa + CH3CH2OH I ruled out Aldol condensation and enolization
what is the density of a sample of ammonia gas, NH3, if the pressure is .928 atm and the temperature is 63.0 C?
Solid phosphorus pentabromide, PBr5, has been shown to have the ionic structure [PBr4+][Br? ]. Write the electron-dot formula of the PBr4+ cation
What is the molarity of a solution prepared by dissolving 10.5 grams of NaF in enough water to produce 750 mL of solution
Analysis of an unknown substance showed that it has high boiling point and is brittle. It is an insulator as a solid but conducts electricity when melted, which of the following substances would have those characterisitics
A tanker truck carrying 2.01×10^3 kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuric acid solution is 95.0% H_2SO_4 by mass and has a density of 1.84 g/L. Sodium carbonate Na_2CO_3) is used to neutralize the sulf..
How many possible isomers could exist for diacetylferrocene? Explain. Calculate the volume of 3M aqueous sodium hydroxide needed to neutralize the acetic and phosphoric acids in the synthesis of acetylferrocene?
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