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Equal quantities of 0.010M solutions of an acid HA and a base B are mixed. The pH of the resulting solution is 9.2.
Write the equilibrium equation for the reaction between HA and B.
If Ka for HA is 8.0×10?5, what is the value of the equilibrium constant for the reaction between HA and B?
What is the value of Kb for B?
In this exercise it was assumed that the initial temperature of the metal was the same as that of the boing water. Qualatively, how would the calculated specific heat of the metal be affected
A solution of 75.0 of benzene and 75.0 of toluene has a total vapor pressure of 80.9 at 303 . Another solution of 100.0 benzene and 50.0 toluene has a total vapor pressure of 93.9 at this temperature.
Propose a reaction sequence for the conversion of benzoic acid into phenylacetic acid. No need for mechanisms
What are the concentrations of HSO4-, SO42-, and H+ in a 0.255 M KHSO4 solution? (Hint: H2SO4 is a strong acid; Ka for HSO4- = 1.3 10-2.)
What is the numerical value of the rate constant and what are the units? and Calculate the rate of this reaction when the initial concentrations of OCl- and I- are 7.6 x10-3 M and 9.6 x 10-3M respectively.
At least how many standard solutions would you need to make calibration graph, assuming that the graph is expected to be a straight line? Explain your answer. Do not include the data from distilled water
In a beaker of boiling water, there are many gas bubbles forming throughtout the liquid. What gas comprises the bubbles.
For which of the following species is resonance an important property: HONO, HONO2, N3-, NO2-, NO2
The molality of a sodium nitrate solution is 1.44 m. What is the mole fraction of NaNO3? The molar mass of NaNO3 is 85.06 g/mol; the molar mass of H20 is 18.02.
times that of nitrogen gas ( at the same temperature). calculate the molar mass of the unknown gas in g/mol?
Determine How many moles each of Na+ and Cl- are in 0.800 L A physiological saline solution contains 172mEq/ L each of Na+ and Cl-of the saline solution?
calculate the mass of Fe(NO3)3 that you would need to yield a similar conductivity value as the NaCl
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