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What the reagent for 1. Amide, 2. Acyl chloride, 3. Acid anhydride? Given that a:b=8:5 and b:c=3:4. Find the ratio= a:b:c. Give your answer in simplest form? Express the equilibrium constant for the following : PC15(g) ⇌ PC13(g) + Cl2(g)? Calculate the pH of a solution that is .100 M in formic acid (HCOOH) and .100 M in sodium formate (NaHCOO). Ka of formic acid is 1.8 x 10-4? HELP I HAVE A LAB I NEED TO WRITE ABOUT. Write at least 2 possible sources of error in lead iodide stoichiometry lab,?