CHM1045 Study Guide - Midterm Guide: Aspirin, Hypoiodous Acid
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Acids & bases mixed practice because the initial concentration is less than 1000 times different than the k value , we need to do fullauadratrc. Calculate the ph and equilibrium concentrations of a 0. 025m formic acid solution (hco2h). (ka = 1. 8x10- 1. 8 10 - : ozs - . [1-17]=0-025 -0-00203=0. 023 m ph= - log [1-1-1] ph= 2. 69. Calculate the ph and equilibrium concentrations of a 0. 10m nitrous acid (hno2) solution. (ka = 4. 0x10-4) k " = A 0. 15m solution of a weak acid is 3. 0% dissociated. [hnoz]= 0. 10-0. 00613=0 -10m ph= - log ett] -logg. io] ph = -2. 21. The ph of a 0. 0100m solution of cyanic acid (hocn) is 2. 77. Calculate the ka of this acid at this temperature. 0. 00150 c : 30 10-3 e 8. 30 10-3. A typical aspirin tablet contains 325mg of acetylsalicylic acid (hc9h7o4). Calculate the ph of a solution that is prepared by dissolving two aspirin tablets in 1 cup of water. (1 cup = 237ml) ka=3. 3x10-4.
