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Potassium acid phthalate, KHC8H4O4 (molar mass 204.22 g/mol), is used to standardize solutions of bases. The acid reacts according to the following balanced equation: KHC8H4O4 (aq) + NaOH (aq) --------> H2O (l) + KNaC8H4O4 (aq)
If a 0.902 g sample of the acid is dissolved in water and titrated to the equivalence point with 26.45 mL of NaOH, what is the molarity of the NaOH solution?
Draw appropriate Lewis structure and VSEPR structure for oxalate anion. What is the O-C-O bond angle? What is the C-C-O bond angle? What is the hybridization of each carbon? On which atoms does the negative charge reside? Draw all resonance struct..
propose a structure for an amine of formula C4H9N, which liberates a gas when treated with NaNO2 and HCl. The 13C NMR spectrum is as follows with attached protons in parentheses: delta 14 (2), delta 34.4(2), delta 50.0(1)
Consider an electrochemical cell consisting of two vessels connected by a porous separator. One vessel contains 0.650 M HCl solution and an Ag wire electrode coated with AgCl solid.
1) Analysis of a salt results in the following composition: 3.47 g sodium; 2.12 g nitrogen and 7.27 of oxygen. What is the empirical formula for this salt?
Potassium chlorate decomposes into potassium chloride and oxygen. how many moles of potassium chlorate are required to form 32 grams of oxygen.
Calculate the pH of a buffer made with 0.50 M phosphoric acid and 0.75 M sodium dihydrogen phosphate. Ka = 7.5 x 10^-3
The reaction of pure (S)-2-chlorobutane with sodium cyanide in dimethylsulfoxide produces pure (R)-2-cyanobutane. Explain why a racemic mixture is not expected for this reaction if it occurs via an Sn2 mechanism.
By what factor is the decomposition rate constant increased in the catalyzed reaction at 300K Justify your answer, no word count
What will be the freezing point and boiling point of this aqueous solution if given that Kb(H 2 O) = 0.51 oC/m and Kf = 1.86o C/m.
Discussion responses should be on topic, original, and contribute to the quality of the Discussion by making frequent, informed references to lesson materials and Seminars. Initial Discussion responses should be around 150 words. Responses to your cl..
the sun is approximated as a spherical black body with a surface temperature of 5762 k. the irradiation from the sun as
Calculate the equilibrium constant at 298 K for the reaction of ammonia with oxygen to form nitrogen and water. The data refer to 298 K.
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