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(a) Given that Ka for acetic acid is 1.8 X 10-5 as well as that for hypochlorous acid is 3.0 X 10-8, which is the stronger acid? (b) Which is the stronger base the acetate ion or the hypochlorite ion? (c) Compute Kb values for CH3COO- and ClO-.
Find the Diffusivity of Ammonia gas(A) in a mixture of nitrogen(B) and hydrogen(C). D(AB)=3.28x10^(-5)m2/s and D(AC)=1.093x10^(-4)m2/s.
a gas has a volume of 2.57L, a pressure of 1.54 atm, and a temperature of 24.5 C. calculate the number of moles of gas present.
Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+, and Fe2+
Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 7.40E-3 M aqueous solution of formic acid (Ka = 1.80E-4).
Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275Ml of 0.725 M HCl solution reacts with the excess Mg. Mg(s)+ 2HCl(aq)----> MgCl2(aq) + H2(g)
Consider a triprotic system whose fully protonated form can be denoted by H3A. By definition, the fractional composition of the most basic form of the system, A3-, can be written as
Which of the following underlined items is not an intensive property (a) A chemical reaction reqyuires 3.00g of oxygen (b) Solid copper hydroxide is blue colored (c) the density of helium at 25degree celsius
Frank and Oswalt report a molar absoptivity of 4700 L mol -1 cm-1 for the thiocyanatoriron(III) ion. What % T would you expect for a solutions that is 1.0x10-4 M in thiocyanatoiron(III) ion, if the path length is 1.00 cm
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? For bonus mark..
determine the molarity of the solution if 3.00 grams of ammonium sulfate is dissolved in enough h2o to form 300. ml of
An excited hydrogen atom emits light with a frequency of 1.14x10^14 Hz to reach the energy level for which n=4. In what principle quantum level did the electron begin
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