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Explain why aspirin is more soluble in ethanol than in water. For either of these solvents explain why it would be a better choice as a recrystallization solvent than the other (water vs ethanol)
Zinc sulfide, ZnS, is sparingly soluble under most situations. With ammonia, Zn2+, forms four complexes, Zn(NH3)2+, Zn(NH3)2+2, Zn(NH3)2+3, and Zn(NH3)2+4. Ammonia is, of course, a base, and S2- is the anion of the weak diprotic acid, H2S. Find th..
A solution contains 1 x 10-3 M Fe2+ and 2 x 10-10 M Fe3+. As the pH of the solution is raised, which iron hydroxide will precipitate first (i.e., ferrous hydroxide, Fe(OH)2(s) or ferric hydroxide, Fe(OH)3(s)). At what pH will this occur?
Update the backbone to properly show a tripeptide, and add side chains and hydrogen atoms to show Gly-Phe-Tyr.
A water carbonating plant operates by providing carbon dioxide at 5.0 atm. Estimate the molar concentration of CO2 in carbonated water it produces at 25 ºC.
H2S (aq) is a polyprotic acid, meaning it can dissociate its hydrogen ion more than once. However, HS- (given its negative charge as well as its extra hydrogen ion) can act as either a base or an acid
Given the stepwise formation constants for Zn(NH3)4 complex are logKf1=2.18 , logKf2=4.43 , logKf3=6.74 , logKf4=8.70 and the pKb fo ammonia is 4.76.
At equilibrium,beaker a lost 7.0g. Define what will happen for the system to be equilibrium as well as compute the molar mass of the unknown and state any assumption
How is the cleaning power of soaps affected by hard water. How do water softeners alter this phenomenon
Which of the following is true when comparing the hydrolysis of esters in acidic solution with the hydrolysis of esters in basic solution. both the inorganic and organic products are the same in both cases
Calculate the degree of dissociation and dissociation constant of the salt and how many times the reaction rate changes in the presence of catalyst at the same temperature.
Under these conditions, how many grams of NH3 (MW = 17.0 g/mol) will be produced from the reaction of 25.0 g N2 (MW = 28.0 g/mol) with 2.00 g H2?
Can we say that hemoglobin is a complexing agent. Discuss this issue, giving at least three reasons to substantiate your point of view.
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