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c. II, III, and IV<br />
d. I and III<br />
e. I, II, and III<br />
____ 89. What is the total ionic equation for the following formula unit equation?<br />
BaCl2(aq) + Na2SO4(aq) BaSO4(s) + 2NaCl(aq)<br />
a. [Ba 2+ (aq)+Cl - (aq)] + [Na + (aq)+SO4 2- (aq)] BaSO4(s) + [Na + (aq)+Cl - (aq)]<br />
b. [Ba 2+ (aq)+2Cl - (aq)] + [2Na + (aq)+SO4 2- (aq)] BaSO4(s) + 2[Na + (aq)+Cl - (aq)]<br />
c. [Ba 2+ (aq)+2Cl - (aq)] + 2[Na + (aq)+SO4 2- (aq)] BaSO4(s) + 2[Na + (aq)+Cl - (aq)]<br />
d. [Ba 2+ (aq)+2Cl - (aq)] + [Na + (aq)+SO4 2- (aq)] BaSO4(s) + [Na + (aq)+Cl - (aq)]<br />
e. Ba 2+ (aq) + SO4 2- (aq) BaSO4(s)<br />
____ 90. Which of the following equations could not be a formula unit equation for the net ionic equation: H + (aq) +<br />
OH - (aq) H2O(l)?<br />
a. HCN(aq) + NaOH(aq) NaCN(aq) + H2O(l)<br />
b. HNO3(aq) + NaOH(aq) NaNO3(aq) + H2O(l)<br />
c. HCl(aq) + KOH(aq) KCl(aq) + H2O(l)<br />
d. HClO4(aq) + LiOH(aq) LiClO4(aq) + H2O(l)<br />
e. Ba(OH)2(aq) + 2HCl(aq) BaCl2(aq) + 2H2O(l)<br />
____ 91. Determine the oxidation number of the underlined element in NaNO3.<br />
a. +1<br />
b. +2<br />
c. +3<br />
d. +4<br />
e. +5<br />
____ 92. Determine the oxidation number of the underlined element in P5O10.<br />
a. +3<br />
b. -2<br />
c. +4<br />
d. -1<br />
e. +5<br />
____ 93. Determine the oxidation number of the underlined element in .<br />
a. +1<br />
b. +2<br />
c. +3<br />
d. -1<br />
e. -2<br />
____ 94. What are the oxidation numbers (oxidation states) of the elements in HCO3 - ?<br />
a. H = +1, C = +5, O = -2<br />
b. H = +1, C = +3, O = -2<br />
c. H = +1, C = +2, O = -2<br />
d. H = +2, C = +2, O = -2<br />
e. H = +1, C = +4, O = -2
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