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At 25 °C for pure water Kw = [H+] [OH-] = 10-14M^2. a. Calculate Kc = [H+] [OH-]/[H2O], and Ka with activity defined relative to the Henry's law standard state. b. Use each of the Kc and Ka to calculate ?Gr of the water dissociation reaction H2O (l) --> H+(aq) + OH-(aq). What are the standard states for the three species in the two cases? Density of water is 997 kg/m^3.
Calculate the amount of heat energy required to convert 55.0 g of water at 62.5 degrees Celsius to steam at 124.0 degrees Celsius
the addition of bromine to an equimolar mixture of cis- and trans-2-butene generates only three stereoisomers. Explain.
whats the ph of a solution of 1000 mg of vitamin C (176.1 g/mol) in water (Ka = 8*10^5) diluted to 254 mL
What is the percent purity of the calcium hydroxide if the titration requires 7.81 mL of the acid to reach the endpoint?
If phenolphthalein is used as an indicator for titrating Ca(OH)2 with titrant HCl instead of methyl orange, which is the recommended indicatory
Free radicals are important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the actions of sunlight on air pollutants, is formed in part by the following two steps.
If 25.0 grams of potassium chlorate decomposes, how many grams of gas are released as a product?
Given that the Ka of boric acid is 5.8x10^-10M, what is the pH of a 0.50M boric acid solution? Are there any good approximation available?
How long (in hours) would this current have to be applied to plate out 8.90 g of nickel?
Calculate the composition and quantity of all phases for a 50 wt % Magnesium - Lead alloy at 435 deg Celsius. Sketch the resulting microstructure, assuming the material was equilibrium cooled from the liquid phase.
How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution.
What is the order of increasing polarity of the compounds: benzophenone, trans-stilbene, 2-naphthol, benzoic acid
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