Practice Test- Rxs
l)Construct an activity series of elements A,D,E,F,and B by placing the most reactive element on the top
and the least reactive on the bottom in a vertical column using the following info:
Chemistry 12 Ka and Kb Calculations Name
NOTE: For this worksheet, you must show all of your steps in each calculation. tate any
assumptions clearly. Make sure your answer is in the correct number of signicant
digits as justied by the data and make sure
Midterm Review and Practice Problems
1. Consider the
Nz(g) + 3Hzfu) e 2NHt(g) Kuq = 626 at 200'C
is 1.06 mol iL anO [Hz] is 0.456 mol /L. Calculate [XUr] in the
equilibrium mixture. (2
Chem 12 pH and pOH Calcs + Strong Acid/Base
1, Find the [OH'] in a solution with a pH = 8.940 (2 marks)
r- - 6
pout/9-060 .@1+j= 10 5"
2. Find the [OH] in 0.87 M HNO3. (2 marks)
3. Find the [H30 ] in a solution 1n which the pOH= 4 50. (2 marks
NET IONIC EQUATIONS
. Ions in Solution
SOLUTIONS l40 \i
Remember that there is no thing such as an ion in isolation. For example. sz (30). means a solution containing
lead/i) ions. Such a solution results when any soluble lead(l|) compound. such
Solutions l-)nit Test
Nwfutt'frt?,rr ry +Eo kroutv *E Dtsso"runo^7
1.2 2,wLcfw_ + h;'
Write the equation when (NFcfw_+)zSO: is added to water.
Write the formula of aqueous ions found in 3.0 M Na3POa
Write the net io
8.3 Review Questions
1. Complete combustion produces only C02 and H20. Incomplete combustion may
produce C or CO as well. Complete combustion occurs when there is an excess of
oxygen. Incomplete combustion occurs when there is a limited amount of oxygen.
Consider the cell beiow:
iz H+ +z<_
The reaction at the anode is
-+ L + 2e-
B. Pt + Ptz+ +
C. Na -l Na+ +
D. Hzo -+rf
Ch. 12 Equilibrium Problems Graphing supplement
1. Consider the following diagram for a chemical system containing three substances
represented by A, B and C:
Cummimtim 16336 - -
2&3 4.9 51? Eli 14M 12E
a) What featU
_ Solution Quiz : Ionic Forumlae, and Molarity Calculations
date: namezN" J
1. Write the fqr'rnuge for the ions present in aqueous solutions of the following: -clissociation
equatlons. (1 mark each)
a) NagSO4 \DLNOP t SOq ~
b) (NH4)3PO4 \n
Chem 11 Answers to Chapter 6.4 Practice Problems
Note: The examples in these practice problems show bonds () in place of an electron pair. If there is a
double bond that means there would be two pairs of electrons between the atoms. If there is a triple
UNIT Vlll: ANSWERS 305
46.(a,b) OLIO OBe 0: (906)
1 2 3 4
48. (a) The distance between the nucleus and the outermost electrons increases. The greater the
number of electrons, the larger the atomic radius.
(b) The nucleus has a decreasing hold
Practice Problems Atomic Number, Mass Number, and Neutron Number, p. 243
1. cfw_a 20 protons, 2E neutrons and 13 electrons.
cfw_b 52 protons, 25 neutrons, and 54 electrons.
[c] 24 protons, 28 neutrons, and 21 electrons.
2.51 :23: lb 55: (c) 133,111
Practice Test 1
A) For each of the following items, write whether it is associated with elements (may use E) , mixtures
(M), or oompounds(C ). If item is marked with an asterisk, then more than one applies. Write all that
apply in this case. Also, fo
Detennine wtrether each of the following units are appropriate for expressing concentration.
Indicate yes or no in the space provided.
c) nrl- ltlr
A sarnple of 497 .4
Chem 12 Hydrolysis Name:
1. Write dissociation equations for each of the following salts, state whether cation
hydrolyzes, anion hydrolyzes and whether the salt is acidic, basic or neutral. (20 marks)
a) Salt K2C03 Dissociation EquatiOn 'Q 31141 (0 '
Chem 12 Reaction Kinetics Review
1. For each of the following reactions nd a quantity or property which could be monitored in
order to measure the rate of reaction C59, mire- 4 941 w ill 4, 0; RM @Werds
a) CaC03(s) 7" Ca0(s) + C02(g) Volwm e a
Howard Chang 11F
1. a) Write the equation when HCNM) reacts with water to form an acidic solution. *
b) Write the K3 expressmn. HCN + HLO Z? CN'4' H50, Ka z [CNI Hlf CPS? J
2. Calculate the [1130+], [OH], pH and pOH of a 0.0300 M solution of HCN. '
Chem. 12 Equilibrium Review
1. Consider the following potential energy diagram:
\ a) Which reaction, forward or
V reverse, will be affected nae by
an increase in temperature?
~ 4 cl w 17%
Well? wwnc) 7%;th .5er
b)Wr1te a thermo-chemica
Chemistry 12 _ Worksheet 3-2
Name S bail
3 4 Date Due
Do Corrections and Hand In by
This worksheet covers material from Tutorials 9 and 10 class notes and SW for Unit 3.
These questions will be marked and the mark recorded in the Homework section in t
Procedure: You will do at least three titrations. If you add too much base and the solution is
too bright pink, you will need to discard the data and do another run. Also, if your titrations are
greater than 1% different from each other, you will need to
Specific Heat Capacity Report
What is Specific Heat capacity? The specific heat is the amount of heat per unit mass
required to raise the temperature by one degree Celsius.
The specific heat capacity of a substance is the amount of energy nee
Enthalpy and Specific Heat
Experiment 1: Determination of Specific Heat of a Metal
In this experiment, you will determine the identity of an unknown metal by investigating its
specific heat. Read the procedure thoroughly before proceeding with the experim
Enthalpy and Specific Heat
1. When 3.0 kg of water is warmed from 10 C to 80 C, how much heat energy is needed?
Q=m x c x (change T)
q = 3kg x 4.184j/g x (80c 10c)
q = 3000g x 4.184j/g x 70c
q = 878640J or 8.79x10^-5
2. A calorimeter con
1. Why is it important to be accurate in all your measurements in this experiment?
2. List the measurements you will take in this experiment.
3. What chemical wastes are produced in this reaction?
Discuss how you cou
General Chemistry Lab Safety
Experiment 1: Neutralization of Acids and Bases
In this experiment, you will learn how to properly neutralize and dispose of acidic and basic
5 mL 4.5% Acetic Acid (vinegar), C2H4O2
(1) 250 mL Beaker
Plant Histology Assignment
Name five structures which characterise this leaf allowing it to protect itself,
photosynthesise and exchange gases with environment and explain how each functions.
1. Upper epidermis (Waxy Cutile)
The presence of a w