Mar 2, 2016
CHEM1030 Practice
Your name_
Formulae and introduction to structure.
Part A. Formulae
This is the fancy alternative to the word formulas. Your last worksheet told you what kind of bonding each compound had. Now
you should figure it out for you
Determination of Reaction
Stoichiometry
The stoichiometric ratio between
Pb(NO3)2 and KBr will be determined by
the method of continuous variations
(Jobs Method).
Principles
Stoichiometry, as we have learned before,
is the branch of chemistry that deals
w
Determination of the Enthalpy for Decomposition of Hydrogen Peroxide
Objective: To construct a coffee cup calorimeter, measure its calorimeter constant, and
determine the enthalpy of decomposition and formation of hydrogen peroxide.
Background: This exper
CHEM 1031
DETERMINATION OF THE
FORMULA OF A HYDRATE
PURPOSE AND GOALS
DETERMINE THE NUMBER OF
MOLES OF WATER IN AN
UNKNOWN HYDRATE.
PRINCIPLES
INORGANIC SALTS
ANHYDROUS CONDITIONS
HYDRATE-WATER MOLECULES
BOUND
WATER
MECHANICALLY TRAPPED
CHEMICALLY BO
Experiment 1
Determination of Density
Purpose and Goals
Learn the use of analytical balances
Learn how to measure volumes
Learn how to use significant figures
Extensive vs. Intensive
properties
Extensive properties depend on the
size of the sample.
I
Experiment 8
Molecular Weight of a Volatile
Compound
Purpose and Goals
To determine the molecular weight of an
unknown volatile compound using the
ideal gas law
Use a method developed by J.R.
Dumas to determine the vapor density
of the unknown
Ideal Gas
CHEM 1031
DETERMINATION OF THE
PERCENT ACETIC ACID IN A
VINEGAR SAMPLE
PART I - DETERMINE THE
CONCENTRATION OF HCl USING
Na2CO3.
PART II - NaOH USING HCl
PART III - ACETIC ACID IN
VINEGAR USING NaOH
PROCEDURE - PART1
OBTAIN VIAL OF Na2CO3, BURET,
AND
Experiment 7
The Gas Constant
Purpose and Goals
To determine the gas constant
R, by collecting H2 produced
when a known amount of
Mg reacts with acid.
Principles
According to the ideal gas law,
PV=n RT
(1)
Rearrange the equation,
R=PV/ n T
(2)
if P,V,
1600 Equation Sheet
v = v0 + at
xCM =
x = x0 + v0 t +
1 2
2 at
v = v0 gt
y = y0 + v0 t 21 gt2
R=
ymax =
1
yCM =
M
Z
I = r2 dm
g
Wnet = Fnet r cos
Wnc = (Uf + Kf ) (Ui + Ki )
2g
v2
= 2r
ac =
r
v = 2r/T = 2rf
KT = 12 mv 2
KR = 12 I 2
Ug = mgh
Uspring = 12
. )5 Z
a, , M ' 5)
L 7 3 k3 "2 5! 405 3 glitz M n 2 MMMMMMMMMMM
M.\
a]: 26 \omoQ xii5M3 .1
31M 1% W
cfw_ M32211 a Maa id! ngzw
/MMW
25:; a
V " Ac: ,5!
M. : .ZGx/o Us (hwy/4) [M
N!
/
i363 ax": l/I?X55W 1%.
cfw_331: 1.5; a
4001M? I,
W/
V;(.a+ r/
' WEB
1