Chapter 11 /
Midterm
Review
Honors Chemistry
Ms. Snarrenberg 2013
Question Types

Orbital Shapes

Orbital Diagram

Electron Configuration

Noble Gas Configuration

Q = -Q (Tf and non-Tf)

Light equation problems x 3

Endo/Exo practice

Enthalpy

Valence / Unpaired electrons

Stoichiometry: Limiting Reactant Problem, % Yield

Absorption / Emission Drawing

E/λ/ν relationship
Orbital Shapes
 Draw the shapes of the s, p
and d orbitals
Orbital Diagram
 Draw the orbital diagram for
copper.
Electron Configuration
 Give the long-hand electron
configuration and the Noble
Gas configuration for
strontium.
Energy/λ/ν

As energy increases, wavelength
______________ and frequency
______________.

The symbol for wavelength is _____ and the
symbol for frequency is _____.

Which has a higher frequency: ultraviolet
light or radiowaves?
Stoichiometry
 If 5.00 g of calcium carbide and
5.00 grams of water are reacted
in the equation below, how much
of the excess reactant will remain
after the limiting reactant has
been consumed?
 CaC2 + H2O  Ca(OH)2 + C2H2
Answer

CaC2 is the limiting reactant

2.18 g H2O will remain
Light Equations
 What are the two light
equations and the combined
light equation? Give the
numerical values for the
constants in these
equations.
Light Equations
 What is the frequency of a
photon with a wavelength of 620
nm?
c = λν
E = hν
c = 2.998 x 108 m/s
h = 6.6262 x 10-34 Js
Answer

620 nm = 6.2 x 10-7 m

ν = 4.18 x 1014 Hz
Light Equations

What is the energy of a photon with a
wavelength of 3.7 x 10-8 m?
Answer

E = 5.4 x 10-18 J
Absorption / Emission
 Draw a Bohr model diagram of
an atom for the absorption of
energy and the emission of
energy in the form of light.
Valence / Unpaired
 How many valence electrons and
unpaired electrons does tin (Sn)
have?
Answer

4 valence electrons

2 unpaired electrons
Calorimetry

A 15.0 g sample of nickel is heated in a
burner flame. It is dropped into a 200.0 g
sample of water. The water rose from 26 ºC
to 29 ºC. What was the temperature of the
metal before it was placed in the
calorimeter? (sNi = 0.440 J/g°C)
Answer

Ti = 400°C

***Bonus*** What does specific heat mean?
Stoichiometry
 When a student heated 1.25 g of
mercuric oxide in the lab, the
student obtained 1.09 g of
mercury. What is the percent
yield of this student’s
experiment? (Hint: what should
the theoretical yield have been?)
 2HgO  2Hg + O2
Answer

Theoretical yield: 1.16 g

% Yield: 94.0%
Enthalpy