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Suppose you are given an acid, HA, that has a Ka=2.50 × 10-3 at 25.0 °C.
a. Write the balanced chemical reaction for HA(aq) reacting with H2O(l).
b. Write the Ka expression.
c. If at equilibrium, [HA]=0.08333 M and [OH-]=6.94 × 10-13 M, what is the [H3O+] of the solution at 25.0 °C?
d. What is the pH of the solution at 25.0 °C?
Question- What mass of precipitate will form if 1.50 L of concentrated Pb(ClO3)2 is mixed with 0.200 L of 0.110 M NaI. Assume the reaction goes to completion.
Suppose that 2.00mL of isopently alcohol was reacted with excess acetic acid and that 2.00g of isopentyl acetate was obtained as product. Calculate the percentage yield.
a how many hydrogen bonds can each water molecule participate in?illustrate your answer by drawing as many water
Your metropolitan area has been warned by the EPA to lower sulfur dioxide and nitrogen oxide emissions or it will lose substantial federal funding. One citizen's group calls for conservation as a means of drastically reducing electricity consumption.
Explain a pressurized tank of helium gas initially at 9bar and 36 C is cooled until the pressure reaches 5bar. Define what is the final temperature of the gas
Calculate approximately the value for the heat of sublimation of methane and calculate the pH for this solution
P and O react to form two different P oxides. The mass % of Pin one of these oxides is 43.64% in the other, it is56.34%. State the empirical formula of each P oxide.
Calculate the volume change (in Liters) during the oxidation of sulfur dioxide in which ?E = -849.700 kJ and ?H = -852.373 kJ at a constant pressure of exactly one atm and constant temperature
Describe how you would purify p-nitrobenzoic acid from a mixture of a 9.0 g of p-nitrobenzoic acid and 2.0 g of o-nitrobenzoic acid using recrystallization.
A voltaic cell consists of an Mn/Mn2+ half-cell and a Pb/Pb2+ half-cell. Calculate Ecell when [Pb2+] = 0.616 M and [Mn2+] = 1.069 M. You should use the reduction potentials for Mn2+ is -1.18 V and for Pb2+ is -0.125 V.
The vapor pressure of ethanol at 34.7 degrees Celsius is 100mmgh, and the heat of vaporization of ehanol is 38.6 kj/ mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degree celcius
The overall reaction is CH3CHO ---> CH4 + CO + C2H (small traces of ethane) Determine the rate law for each step if that step was the rate-determining step.
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