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An o.1 molar solution of butyric acid (HBu) has a pH that varies with the temperature at 10 C- pH=2.9, at 50 C: pH=2.95
a. Compute the equilibrium constant Ka at each temp.
b. For the reaction represented by this Ka, is the reaction endothermic or exothermic? Justify your answer using Le Chatelier's Principle.
A .464 g sample of a metal, M, reacts completely with sulfuric acid according to M+H2SO4 yields MSO4+H2. A Volume of 211 mL of H is collected over water, the water level in the collecting vessel is the same as the outside level.
Predict the products when cyclohexanol is heated in the presence of H+. Show both the organic product and the byproduct
If the volume of each unit cell in argon is 85 percent of the xenon unit cell, what is the predicted density of solid argon?
Why did the book suggest using a Hirsch funnel? What would be the benefit of using a Hirsch funnel?
An unknown noble gas effuses through a tiny hole into an evacuated space with a rate that is 0.578 times the rate of N2(g): rateunk/raten2=0.578. calculate the molar mass of the noble gas in g/mol using Gtaham's law of effusion (N=14.0)
a 0.1375 -g sample of solid magnesium is burned in a constant -volume bomb calorimeter that has a heat capicity of 3024
question an aqueous dextrose solution having a density of 1.04 gcm3 freezes at -1.15degc. find the osmotic pressure of
In a protein determination, the color of dye changes to blue when it binds to protein, and the absorbance of light is measured. The data below were taken to calibrate the instrument
1.994 g sample of ethanol ch3ch2oh is combusted in a bomb calorimeter. the temperature of the calorimeter increases by
When Aqueous solutions of Pb(NO3)2 and Na2SO4 are mixed, a precipitate of PbSO4 is formed. Calculate the mass of PbSO4 formed when 655 mL of 0.150 M Pb(NO3)2 and 525 mL of 0.0751 M Na2SO4 are mixed.
The Delta H for this reaction is 54.8 kJ. How much energy would be absorbed if 24.7 g of NH_4Cl reacts?
The standard enthalpy of formation of the metallocene bis(benzene)chromium was measured in a calorimeter. It was found for the reaction Cr(C6H6)2(s) Cr(s) + 2 C6H6(g) that.
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