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Consider the reaction between salicylic acid (C7H6O3) and acetic anhydride (C4H6O3) to form aspirin (C9H8O4):
C7H6O3 + C4H6O3 → C9H8O4 + H2O
What is the sum of all the coefficients in the balanced equation?
The equilibrium constant Kp is measured (at an unspecified temperature) to be 0.66 for the reaction:
Calculate the molecular weight of the unknown acid.
What is the percent yield of a reaction in which 200 g phosphorus trichloride reacts with excess water to form 82 g HCl and aqueous phosphorus acid (H3PO3)
You tested Lysol cleaner in the lab with the FeCl3 reagent. A definite color change was observed. What conclusion can you make about the Lysol
The vapor pressure of pure methanol, CH3OH, at 30 °C is 160. torr. How many grams of the nonvolatile solute glycerol, C3H5(OH)3, must be added to 131. g of methanol to obtain a solution with a vapor pressure of 133. torr?
Some wastewater has a BOD5 of 150 mg/L. The reaction rate is 0.23/d. What is the ultimate carbonaceous BOD
Calculate the concentration of ions in the following solutions, [I] in AgI in AgI solution with [Ag+] = 9.6E-9 M Ksp=8.3E-17
If one pipet volume of each of the following pipets (2, 5, 10 mL) of a 2.56x10-1 M sample are added to a 25 mL volumetric flask and it is filled to the line with water and well mixed, what is the concentration of the resulting solution?
The rate of vaporization of a liquid can be increased by 1)increasing the surface area 2)increasing the temperature 3)decreasing the
you have a buffer system made up of equimolar amount of carbonic acid,H2CO3, and sodium bicarbonate,NaHCO3. Write equations to show how this buffer behaves when (a) HCL is added and (b) NaOH is added.
Calculate the mass percent of carbon in the compound and calculate What is its final temperature
What relationship exists between H+ ion concentration and OH- ion concentration? What is the OH- concentration in an aqueous solution where the H+
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