6. Chemical Quantities & Aqueous Reactions
Calculate Oxidation Numbers
2PRACTICE PROBLEM
There are multiple possible values of oxidation states for arsenic ranging from –3 to +5. When arsenic is heated in oxygen, tetraarsenic hexaoxide or tetraarsenic decoxide can be produced. What is the formula and oxidation state for each compound?
There are multiple possible values of oxidation states for arsenic ranging from –3 to +5. When arsenic is heated in oxygen, tetraarsenic hexaoxide or tetraarsenic decoxide can be produced. What is the formula and oxidation state for each compound?
ANSWERS OPTIONS
A
tetraarsenic hexaoxide: As2O6; As = +3, O = –2
tetraarsenic decoxide: As4O12; As = +5, O = –1
tetraarsenic decoxide: As4O12; As = +5, O = –1
B
tetraarsenic hexaoxide: As4O6; As = +3, O = –2
tetraarsenic decoxide: As4O10; As = +5, O = –2
tetraarsenic decoxide: As4O10; As = +5, O = –2
C
tetraarsenic hexaoxide: As2O3; As = +3, O = –2
tetraarsenic decoxide: As4O10; As = +7, O = –1
tetraarsenic decoxide: As4O10; As = +7, O = –1
D
tetraarsenic hexaoxide: As4O6; As = +3, O = –2
tetraarsenic decoxide: As4O12; As = +7, O = –2
tetraarsenic decoxide: As4O12; As = +7, O = –2