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Past Exam for CH 126 - Chemistry II at Emporia State University (ESU)

Exam Information

Material Type:Exam 2
Professor:Staff
Class:CH 126 - Chemistry II
Subject:Chemistry
University:Emporia State University
Term:Spring 2000
Keywords:
  • Bronsted-Lowry Theory
  • Equilibrium Reaction
  • Either...or
  • Provided That
  • Concentration
  • Following Reactions
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CH 126 NAME: Spring 2000 EXAM #2 1) Below is a graph showing the titration of 50.00 mL of an HA (a monoprotic acid) solution with 0.1334 M NaOH. Use this graph to answer the following questions. a) Estimate the Ka of HA? (5 points) b) What is the initial concentration of the HA solution (the concentration before any NaOH was added). (7 points) Titration of HA with 0.1334 M NaOH 0 2 4 6 8 10 12 14 0 10 20 30 40 Volume NaOH Added (mL) pH 2) Calculate [H+], [OH-], pH, and pOH for 0.500 M solutions of the following? a) KOH (8 points) [H+]: [OH-]: pH: pOH: b) NaCN (8 points) [H+]: [OH-]: pH: pOH: c) HNO2 (8 points) [H+]: [OH-]: pH: pOH: 3) Arrange the following in order of increasing acid strength. (4 points) HCl, HBr, HI 4) Arrange the following in order of increasing base strength. (4 points) Br-, BrO-, BrO2- 5) Identify all species in the following reactions as either an acid or a base (conjugate acid or conjugate base) using Bronsted-Lowry theory. (4 points each) a)...
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