What is the value of the acid dissociation constant ka
A 0.45 M solution of pentanoic acid (CH3CH2CH2CH2COOH) is found tohave a pH of 3.73 at 298K. What is the value of the acid dissociation constant Ka for this monoprotic acid?
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Liquid A has vapor pressure x and liquid B has vapor pressure y. What is the mole fraction of the liquid mixture if the vapor pressure above the solution is 30% A by moles?Calculate in terms of x and y.
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Calculate the percentages of Na2CO3 and NaHCO3 in the sample.Hint: Phenolphthalein will indicate when only the first equivalence point happens, Bromocresol green will indicate when the second equivalence happens (titrate all species).
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Calculate the steady-state creep rate (in hr-1) if the bar has a tensile stress of (4.6x10^1) MPa at (2.45x10^2)oC. Assume that the activation energy for creep is 140 kJ/mol.
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