CEM 142 Study Guide - Midterm Guide: Amphoterism, Titration, Ph

113 views3 pages

blackcat666

18 Feb 2013

School

Department

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Solutes: things dissolved in water as an aqueous solution. Acids: any acid that is not one of the strong 7. Bases: anything with hydroxide (oh-) and a group i or ii element. Strong acid + strong base neutralize to form water. Strong acid + weak base forms ammonium ion. Weak acid + strong base forms a salt. Weak acid + weak base forms a salt. Ka = equilibrium constant for an acid reaction. Kb = equilibrium constant for a base reaction. Arrhenius: an acid increase the [h3o+] in solution. Bronstead-lowry: an acid donates an h+ to its conjugate base: amphiprotic: substance that can be either an acid or a base in the bronstead-lowry definition. H30+ is the strongest acid that can exist in water- everything stronger dissociates. Oh- is the strongest base that can exist in water- everything stronger dissociates. The stronger base always gets the proton when something is amphiprotic. An acid"s strength is based on oxygen"s electronegativity.

Related Questions

1. Rank the following 0.100 M solutions in terms of increasing pH:

HCl(aq), H₂O(l), NaOH(aq) < NaF, (aq), and H₂CO₃.

2. The pH of a solution at the phenolphthalein end point is 9.0. For which type of titration could you use phenolphthalein as an indicator?

Select one:

a. Titrations of strong acids only.

b. Titration of all strong and most weak acids.

c. Titrations of weak bases only.

d. Titrations of weak acids only.

e. All titrations of strong or weak acids or bases.

3. 4.199 g of NaF(s) are dissolved in water and poured quantitatively into a 50.00 mL volumetric flask which is filled to the line with DI water and mixed well. 20.00 mL of this solution is pipetted into a 100 mL volumetric flask which is filled with DI water and mixed well. 25.00 mL of this solution is pipetted into a 100 mL volumetric flask which is filled with DI water and mixed. What is the [NaF] in this final solution?

Select one:

a. 0.2000 M

b. 0.1000 M

c. 0.04000 M

d. 0.2500 M

e. 1.000x10^-4 M

plumelephant645

CEM 142 Study Guide - Midterm Guide: Amphoterism, Titration, Ph

Document Summary

Get access

Related Documents

CHEM 1F92 Chapter Notes - Chapter 4: Chemical Equation, Spectator Ion, Alkaline Earth Metal

CHEM 1210 Chapter Notes - Chapter 4: Spectator Ion, Ionic Compound, Alkali Metal

CHE 106 Lecture Notes - Lecture 4: Silver Nitrate, Strong Electrolyte, Lead(Ii) Nitrate

Related Questions