CHEM527 Midterm: exam1_chem527_06F
31 Jan 2019
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Where appropriate, show work to receive full credit. Pace yourself - you may want to do the easiest questions first. Note the point value of questions varies widely - adjust your answers accordingly. Please give concise answers unfocused, rambling, answers often receive less credit than a few short phrases. If there isn"t much space allotted - a short answer is appropriate. Some questions have more data than needed to tackle the problem. If we cannot read it . it is wrong. Table of amino acid pk values pk (cid:302)cooh. Most of the credit goes for the correct numerical answer: the ph of a solution is 3. 3. [oh-] = ___________ m: aspirin (pk 3. 5), a weak carboxylic acid, is dissolved in water to give a solution with a ph of 2. 5. [aspirin] = _____________m: you add 0. 19 moles of koh to 0. 5 l of 0. 4 m formic acid (pk 3. 7).
