The three common chromium oxides are CrO , Cr 2 O 3 , and CrO 3 . If Cr 2 O 3 is amphoteric, what can you say about the acid-base properties of CrO and CrO 3 has to be explained. Concept Information: Oxides of metals and non-metals may be, Acidic-exhibits acidic character Basic-exhibits basic character Amphoteric-exhibits both acidic and basic character Neutral-does not exhibit any of the acidic or basic character Order of Basicity: The basicity of metal oxides depends on the oxidation number of the metal ions. The most basic oxides occur with metal ions having the lowest positive charges (or lowest oxidation numbers). Metallic compounds in which the oxidation numbers of the metals are low are more ionic than those in which the oxidation numbers of the metals are high Metal ions with high oxidation numbers are unstable. Consequently, these metals tend to form covalent bonds (rather than ionic bonds) with oxygen. To Explain: The acid-base properties of CrO and CrO 3
The three common chromium oxides are CrO , Cr 2 O 3 , and CrO 3 . If Cr 2 O 3 is amphoteric, what can you say about the acid-base properties of CrO and CrO 3 has to be explained. Concept Information: Oxides of metals and non-metals may be, Acidic-exhibits acidic character Basic-exhibits basic character Amphoteric-exhibits both acidic and basic character Neutral-does not exhibit any of the acidic or basic character Order of Basicity: The basicity of metal oxides depends on the oxidation number of the metal ions. The most basic oxides occur with metal ions having the lowest positive charges (or lowest oxidation numbers). Metallic compounds in which the oxidation numbers of the metals are low are more ionic than those in which the oxidation numbers of the metals are high Metal ions with high oxidation numbers are unstable. Consequently, these metals tend to form covalent bonds (rather than ionic bonds) with oxygen. To Explain: The acid-base properties of CrO and CrO 3
Solution Summary: The author explains that the basicity of metal oxides depends on the oxidation number of the metal ions.
The three common chromium oxides are
CrO,
Cr2O3, and
CrO3. If
Cr2O3 is amphoteric, what can you say about the acid-base properties of
CrO and
CrO3 has to be explained.
Concept Information:
Oxides of metals and non-metals may be,
Acidic-exhibits acidic character
Basic-exhibits basic character
Amphoteric-exhibits both acidic and basic character
Neutral-does not exhibit any of the acidic or basic character
Order of Basicity:
The basicity of metal oxides depends on the oxidation number of the metal ions.
The most basic oxides occur with metal ions having the lowest positive charges (or lowest oxidation numbers).
Metallic compounds in which the oxidation numbers of the metals are low are more ionic than those in which the oxidation numbers of the metals are high
Metal ions with high oxidation numbers are unstable.
Consequently, these metals tend to form covalent bonds (rather than ionic bonds) with oxygen.
To Explain: The acid-base properties of
CrO and
CrO3
Write the complete common (not IUPAC) name of each molecule below.
Note: if a molecule is one of a pair of enantiomers, be sure you start its name with D- or L- so we know which enantiomer it is.
molecule
Ο
C=O
common name
(not the IUPAC
name)
H
☐
H3N
CH₂OH
0-
C=O
H
NH3
CH₂SH
H3N
☐
☐
X
G
(Part A) Provide structures of the FGI products and missing reagents (dashed box)
1 eq Na* H*
H
-H
B1
B4
R1
H2 (gas)
Lindlar's
catalyst
A1
Br2
MeOH
H2 (gas)
Lindlar's
catalyst
MeO.
OMe
C6H1402
B2
B3
A1
Product carbons' origins
Draw a box around product
C's that came from A1.
Draw a dashed box around
product C's that came from B1.
Classify each of the amino acids below.
Note for advanced students: none of these amino acids are found in normal proteins.
X
CH2
H3N-CH-COOH3N-CH-COO-
H3N-CH-COO
CH2
CH3-C-CH3
CH2
NH3
N
NH
(Choose one) ▼
(Choose one)
S
CH2
OH
(Choose one) ▼
+
H3N-CH-COO¯
CH2
H3N CH COO H3N-CH-COO
CH2
오오
CH
CH3
CH2
+
O
C
CH3
O=
O_
(Choose one)
(Choose one) ▼
(Choose one)
G
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell