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Question- Alcohol dehydrations are catalyzed by concentrated phosphoric and sulfuric acid. Why are these acids preferable to a simpler acid such as HCl? Consider the concentrations of the acids. In addition to the alkene, what else is produced in the dehydration reaction?
Given 100.0mL of a buffer that is 0.50 M in HOCl and 0.40 M in NaOCl, what is the pH after 10.0mL of 1.0 M NaOH has been added. (Ka for HOCl = 3.5 x 10^-8)
Problem- What hydrogen ion concentration should be required to dissolve 0.10 M MgF2 if the Ksp for magnesium flouride is 6.8*10^-9and Ka for HF is 6.5*10^-4
what is the maximum number of electrons that can have a principal quantum number of 3 within one
Calculate mass of solid sodium benzoate (MW = 122.0 g/mole) required to mix with 100.0 mL of 1.0 M benzoic acid to prepare a pH 5 buffer. Ka of benzoic acid = 6.3E-5.
Calculate the molar absorptivities for In- at 454 and 654nm, set up two simultaneous equations, and determine the molar concentrations of HIn and In- in the buffer solutions
Solid potassium nitrate is decomposed by heating to give potassium nitrite and oxygen gas. If 1.00g of potassium nitrate is heated, what is the milliliter volume of oxygen gas at STP
A calibration curve for absorbance versus the concentration of the chemical indicator crystal violet is found to have a slope of 19. If a sample of unknown concentration has an absorbance of 1.32
the activation energy for the reaction no2gco2g----gtnogcog is ea 325 kjmol and the change in enthalpy for the reaction
The rate constant k for a first order reaction is 1.36 * 10 -3 s -1 at 90 degrees Celcius and the activation energy is 78.4 kJ/mol. What is the rate constant for this reaction at 50 degrees Celcius?
description of the mechanism of this reaction? tertiary carbanion, 2-methylpentoxonium ion, sp hybridized pentyne, vicinal dihydroxide, or hydroxide ion.
871 test of an unknown acid requires 32.9 mL of a .187 Mbarium hydroxide solution for neutralization. Assuming the acid is diprotic, Compute the molar mass of the acid.
consider an aqueoous solution of sugar c12h22o11 m 342gmol in water. its density is 1.05 gml. the mole fraction of
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