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After 24.9 g benzoic acid, 17.9 mL of methanol, and a trace of anhydrous sulfuric acid are refluxed together, 3.4 g benzoic acid are recovered from the final mixture. What is the equilibrium constant for this reaction based on benzoic acid?
After 20.1 g benzoic acid, 18.6 mL of methanol, and a trace of anhydrous sulfuric acid are refluxed together, 11.5 g methyl benzoate are recovered from the final mixture. What is the equilibrium constant for this reaction based on methyl benzoate?
If Keq for the Fischer esterification of benzoic acid with methanol = 10, what is the percent conversion after an equimolar mixture of benzoic acid and methanol comes to equilbrium?
When determining Keq for the Fischer esterification of benzoic acid with methanol, how will your calculation be affected if you lose crystals of benzoic acid on the filter paper during vacuum filtration?
Diamond has a face-centered cubic unit cell, with four more C atoms in tetrahedral holes within the cell. Densities of diamonds vary from 3.01 g/cm3 to 3.52 g/cm3 because C atoms are missing from some holes.
The pH increased from 5.8, the normal pH of a cigarette , to pH 6.4 by addition of ammonia. How many moles of ammonia are required to produce this pH change per cigarette (volume approx. 5ml)?(Assume that no unprotonated ammonia will exist at pH 6..
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0 x 10-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
How many grams of O2 will be required to completely react with 2.43 grams of Mg metal ribbon to produce MgO.
What is the weight percent concentration of sodium carbonate in your unknown if it takes 37.25 mL of 0.1018 M hydrochloric acid to reach the second equivalence point of the titration
What are the vant Hoff factors of C2H5OH (no dissociation), NaCl (full dissociation), Na2CO3 (full dissociation)
When sodium reacts with water, 255 mL of hydrogen gas forms along with sodium hydroxide. What mass of sodium is needed for this reaction?
Suggest a chemical test that would allow you to distinguish between tert-butyl alcohol and 1 butanol, both of which give a positive ceric nitrate test?
Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9041 amu. What is the atomic mass of this element?
A 2.30-g sample of a large biomolecule was dissolved in 16.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
How would you synthesize Acetophenone starting from an Alkene? Identify and draw the structure of the starting compound
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is ..
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