CHEM 0420 Study Guide - Midterm Guide: Buffer Solution, Equivalence Point, Titration
Document Summary
Basic exam information: the exam will be given during class on friday, march 18th, the exam has 15 questions. 10 multiple choice questions, mostly conceptual in nature (5 points each) 5 free response questions, most of which involve calculations (50 points total: answers to the multiple choice questions will be graded using a scantron sheet, bring a #2 pencil, make sure you bring a calculator. Initial ph ph before the equivalence point (in the buffer region) ph at the equivalence point ph beyond the equivalence point. Example question #1: which of the following combinations is not suitable for making a buffer: nh4cl and nh3, nah2po4 and na2hpo4, na2co3 and nahco3, h2so4 and nahso4, h3po4 and nah2po4. Example question #2: 73 ml of 0. 100m koh was added to 173 ml of 0. 100m. Example question #3: which of the following substances will increase the molar solubility of nickel(ii) phosphate in a saturated solution: (nh4)3po4, nh4cl, na3po4, koh, hno3.
