View the step-by-step solution to:

Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular. Solubility in Water Melting (kg/kg H2O, 25oC)...

1. Consider the following data: expect a BeF2 molecule to be linear but an SF2 molecule to be angular.
Solubility in Water Melting
(kg/kg H2O, 25oC) Point (oC)
NaF 0.042 988
NaCl 0.357 801
NaBr 1.16 755
Nai 1.84 651
a) Explain the decreasing melting point from NaF to Nai.
b) Explain the increasing solubility in the same order.
c) Cesium fluoride has a melting point of 682oC and a solubility of 3.67 kg/kg H2O at 25oC. Explain the difference between the properties of CsF and NaF.
2. What test would determine whether a solid substance contains ionic bonds?
3. a) Explain why graphite is soft and has a high melting point.
b) Explain why diamond is hard and has a high melting point.
c) Why is diamond a poor conductor of an electric current and graphite a good conductor?
4. Answer the following questions using the information in the table.
Element Melting point (˚C) Boiling point (˚C) Molar volume at STP (L)
A -189 -186 22.4
B -100 -35 22.4
C -7 58 2.6 x 10-2
D 30 2240 1.2 x 10-2
E 44 280 1.7 x 10-2
F 660 2450 1.0 x 10-2
G 3410 5930 1.0 x 10-2
a) Which elements are likely to be metals?
b) Which elements are gases at STP?
c) Which element is most likely to be a non-metallic solid?
d) Which elements are likely to conduct well in the solid form?

1. Consider the following data: expect a BeF2 molecule to be linear but
an SF2 molecule to be angular.
Solubility in Water Melting
(kg/kg H2O, 25oC) Point (oC)
NaF 0.042 988
NaCl 0.357 801
NaBr 1.16 755
Nai 1.84 651
a) Explain the decreasing melting point from NaF to Nai.
b) Explain the increasing solubility in the same order.
c) Cesium fluoride has a melting point of 682oC and a solubility of 3.67
kg/kg H2O at 25oC. Explain the difference between the properties of CsF
and NaF.
2. What test would determine whether a solid substance contains ionic
bonds?
3. a) Explain why graphite is soft and has a high melting point.
b) Explain why diamond is hard and has a high melting point.
c) Why is diamond a poor conductor of an electric current and graphite a
good conductor?
4. Answer the following questions using the information in the table.
˚C) Boiling point (˚C) Molar volume at STP (L)
A -189 -186 22.4
B -100 -35 22.4
C -7 58 2.6 x 10-2
D 30 2240 1.2 x 10-2
E 44 280 1.7 x 10-2
F 660 2450 1.0 x 10-2
G 3410 5930 1.0 x 10-2
a) Which elements are likely to be metals?
1
2
w
y
1
2
x
y
"
$
J
N
P
R
z
~
Ђ
‚
„
Ш
Ъ
are gases at STP?
c) Which element is most likely to be a non-metallic solid?
d) Which elements are likely to conduct well in the solid form?

Recently Asked Questions

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question