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Resolution of Worksheet on General Chemistry I | CH 221, Assignments of Chemistry

Material Type: Assignment; Professor: Ziegler; Class: General Chemistry I; Subject: Chemistry ; University: Central Oregon Community College; Term: Summer 2005;

Typology: Assignments

Pre 2010

Uploaded on 08/16/2009

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CH 221—Ziegler KEY
Chem 221 worksheet for Chapter 6, 7
1. Complete the following table by calculating the missing terms
λ wavelength ν frequency
(Hz or sec-1)
Energy/photon
(J)
Energy/ mole
(kJ/mole)
4.18 x 10-6 m (A) 7.18x 1013 s-1 (B) 4.76 x 10-20 J (C) 28.6 kJ mol-1
(D) 8.02 x 10-7 m 3.74 x 1014 Hz (E) 2.48 x 10-19J (F) 149 kJ mol-1
(H) 6.52 x 10-7 m (G) 4.60 x 1014 s-1 3.05 x 10-19 J (I) 183 kJ mol-1
(L) 2.31 x 10-7 m (K) 1.30 x1015 s-1 (J) 8.60 x 10-19J 518 kJ/mole
Box A)
8
13 1
6
3.00 10 1 7.18 10
4.18 10
c x m
x x s
s x m
υλ
= = =
Box B)
(
)
(
)
34 13 1 20
6.63 10 7.18 10 4.76 10
E h x J s x x s x J
υ
= = =
Box C)
20 23
4.76 10 6.02 10 1 28.6
1 1 1000
x J x photons kJ
x x kJ mol
photon mole photons J
=
Box D)
8
7
14 1
3.00 10 1 8.02 10
3.74 10
c x m
x x m
s x s
λυ
= = =
Box E) Very much like box B, which see.
Box F) Very much like box C, which see.
Box G)
19 14 1
34
1
3.05 10 4.60 10 sec
6.63 10
E
E h x J x x
h x J s
υ υ
= = = =
Box H) Very much like box D, which see.
Box I) Very much like box F, which see.
Box J) 19
23
518 1 1000 8.60 10
6.02 10 1
kJ mol J
x x x J per photon
mol x kJ
=
Box K) Very much like G, which see.
Box L) Very much like H and D, which see.
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CH 221—Ziegler KEY Chem 221 worksheet for Chapter 6, 7

  1. Complete the following table by calculating the missing terms

λ wavelength ν frequency (Hz or sec-1)

Energy/photon (J)

Energy/ mole (kJ/mole) 4.18 x 10-6^ m (A) 7.18x 10^13 s-1^ (B) 4.76 x 10-20^ J (C) 28.6 kJ mol-

(D) 8.02 x 10-7^ m 3.74 x 10^14 Hz (E) 2.48 x 10-19J (F) 149 kJ mol- (H) 6.52 x 10-7^ m (G) 4.60 x 10^14 s-1^ 3.05 x 10-19^ J (I) 183 kJ mol- (L) 2.31 x 10-7^ m (K) 1.30 x10^15 s-1^ (J) 8.60 x 10-19J 518 kJ/mole

Box A)

(^813 ) 6

c x m (^) x x s υ (^) λ s x m − = = (^) − =

Box B) E = h υ = ( 6.63 x 10 −^34 J s ) x ( 7.18 x 1013 s −^1 )=4.76 x 10 −^20 J

Box C)

1 photon^ x^ J^ x^1 mole photonsx^ photons x^1000 kJJ 28.6kJ mol

− −

Box D)

(^87) 14 1

c x m (^) x x m λ (^) υ s x s − = = (^) − =

Box E) Very much like box B, which see. Box F) Very much like box C, which see.

Box G) E = h υ υ = Eh = 3.05 x 10 −^19 J x 6.63 x 101 − 34 J s=4.60 x 1014 sec−^1

Box H) Very much like box D, which see.

Box I) Very much like box F, which see.

Box J) 518 1 23 1000 8.60 1019 6.02 10 1

kJ (^) x mol (^) x J x J per photon mol x kJ

=^ −

Box K) Very much like G, which see.

Box L) Very much like H and D, which see.

  1. How many electrons can be placed into the following? a. the n= 2 level _____8_______ b. a 4s orbital _ ___2_______ c. a 3p orbital _____ 2 _______ d. all of the 4d orbitals ____ 10 _______ e. a 1s orbital ___ _ 2 _______ f. the n= 1 level ___ _2_______ g. the ℓ =1 sublevel _____6_______
  2. Give the electron configurations for the following gaseous ground state atoms

a. 7 N 1s^2 2s^2 2p^3 b. 6 C 1s^2 2s^2 2p^2 c. 15 P 1s^2 2s^2 2p^6 3s^2 3p^3 d. 33 As 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^3 or [Ar] 4s^2 3d^10 4p^3 e. 29 Cu 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 3d^10 OR [Ar] 4s^1 3d^10 NOTE Special Stability! f. 17 Cl 1s^2 2s^2 2p^6 3s^2 3p^5 or [Ne] 3s^2 3p^5 g. 9 F 1s^2 2s^2 2p^5 h. 12 Mg 1s^2 2s^2 2p^6 3s^2 or [Ne] 3s^2 i. 20 Ca 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 or [Ar] 4s^2

  1. Draw the orbital diagram for the following gaseous ground state atoms. Note: I included unfilled orbitals, because they are there and it was easier to leave them in when I mad the key. You don’t have to include them in your answers. a. 7 N (^)      1 s 2 s (^2) p^3 s^3 p 4 s^3 d 4 p^5 s

b. 6 C (^)      1 s 2 s (^2) p 3 s (^3) p 4 s (^3) d 4 p 5 s

c. 15 P (^)      1 s 2 s 2 p 3 s (^3) p 4 s (^3) d 4 p 5 s

↑↓ ↑↓ (^) ↑↓ ↑↓ ↑↓ ↑↓ (^) ↑ (^) ↑ ↑ (^)  

b. Zn+

(^1 2 2 33 )

3 4 5

s s (^) p s p (^) s

d p s

c. Al+3     1 s 2 s (^2) p 3 s (^3) p 4 s

d. Mg+2     1 s 2 s (^2) p 3 s (^3) p 4 s

e. Ca+2     1 s 2 s (^2) p 3 s (^3) p 4 s 3 d

f. F-     1 s 2 s (^2) p 3 s (^3) p 4 s

g. Cl-     1 s 2 s (^2) p 3 s (^3) p 4 s 3 d

h. S-2     1 s 2 s (^2) p 3 s (^3) p 4 s 3 d

i. O-2     1 s 2 s (^2) p^3 s^3 p^4 s