Titration: A lab technique used to determine the unknown concentration of an acid or
base using a neutralization reaction.
The point in a titration where the moles of acid = moles of base
Endpoint Point a
Equilibrium Constant Worksheet
1. The equilibrium constant for the acid ionization of mercaptoethanol
(HSCH2CH2OH) is 1.91 x 10 .
H (aq) + SCH2CH2OH (aq)
K = 1.91 x 1010
Which of the following statements is true regarding this equilibr
1. Which of the following is true for a chemical reaction at equilibrium?
only the forward reaction stops
only the reverse reaction stops
both the forward and reverse reactions stop
the rate constants for the fo
1. Write an expression for the equilibrium constant for the formation of two moles
of ammonia gas (NH3) from nitrogen and hydrogen in their standard states.
N2(g) + 3 H2(g)
2.Write the correct Kc expression for the followin
1. For the following reaction, write how the each of the changes will affect the
indicated quantity, assuming a container of fixed size. Write increase,
decrease, or no change. (Or use an up arrow to indicate increase, and a
LeChateliers Principle Introductory Problems:
1. Given the following reaction at equilibrium, which of the following alterations
will increase the amount (in moles) of SO2Cl2: (there is only one correct answer)
SO2(g) + Cl2(g) - SO2Cl2(g)
adding heat t
LeChateliers Principle Practice
1. Which of the following occurs when reactantsareaddedto a chemical
reaction in solution or the gas phase at equilibrium?
Qincreases, so the equilibrium shifts to produce more products.
Qincreases, so the equilibrium
1. For the chemical equilibrium A + 2B
2C, the value of the equilibrium
constant, K, is 10. What is the value of the equilibrium constant for the reaction
written in reverse?
Given that: A+2B
Roselyn Franklins lead it DNA leads to greatest discovery in science, some thing its injustice
Photo 51 secret
1962 Noble prize on 3 men
o Ground work on DNA greatest achievement in science
o Key to unlocking secret of life
Chapter 16 molecular basis of inheritance
1. (replication) DNA ( transcription) rNA (translation) Protein
Living R couldnt mixed with Killed caused the rough to transform, (experiment)
Proved that protein wasnt th
*Know who determines sex in chicken
Haploid(male) diploid (f)system* multiple choice
Y only tells you if its male or female
Dwarfism is it a dominant or recessive trait?
Dominant trait like extra finger is dominant, but few
Huntingtons diseases late in li
Homologous carries sames genes, not same traits?
Chromosomal crossover (or crossing over) is the exchange of genetic material between
homologous chromosomes that results in recombinant chromosomes during sexual
#4 Lab Practicum - 20 questions 2.5 points - lab practicum
1. Bacteria note procedure gram staining, know it mordant, - what is color of gram
negative strain of bacteria after ETOH washed? = clear
2. What is fx of iodine? Gram
3. Gram positive, gram negat
April 25, 2014
Finding the Equilibrium Constant
When a chemical reaction reaches dynamic equilibrium the rate of forward
reaction is equal to the rate of the reverse reaction. The equilibrium constant, K eq, is
a parameter that cha
The purpose of this experiment is to synthesize the common pain killer aspirin via an
esterification reaction between Salicylic Acid and Acetic Anhydride in the presence of
The Gravimetric Determination of
Chloride in Soluble Samples
Joel I. Eldridge
The purpose of this experiment is to determine the chlorine ion concentration of an
unknown analyte. Analyte is simply a chemical substance that is determined
What effect does the presence of the ion have on acid
Consider a solution of hydrofluoric acid and sodium fluoride
Solutions of Acids or Bases Containing a
Acids and bases react with each other in very important ways
IB HL Chemistry
Lab Report Format
If you are submitting a lab for DESIGN criteria only, focus on the
yellow highlighted areas of this report.
Your title should reveal both your independent and dependent variable.
Evidence is clear with
initiative or insight
PART I Free Response
Direc2ons: COMPLETE THE TABLES BELOW. Write clearly or your answer is VOID. Show all work in the space provided or your
answer is VOID! Remember to record the units.
Table I Signicant
Write the correct formulas of reactants.
Remember key words, eg. burns means reacts with O2 (oxygen).
Draw pictures to see statement clearly.
Predict products using the correct formulas.
Balance the e
Modied Spring 2011
Directions: Write the formula or name of the following compounds in the space provided. Indicate IUPAC
names only. (Please note that some of the
Instructions: YOU MUST ATTACH ALL WORK BEFORE THIS EXAM WILL BE ACCEPTED. Answers
will be provided at that time.
1. Write the equation for the solubility equilibrium of tin (II) carbonate.
a. Sn(CO3)2(s) - Sn2+(aq) + CO3 2-