1) In the reaction Fe2O3 + 3CO ? 2Fe + 3CO2, which atom(s) has a more positive o
ID: 841664 • Letter: 1
Question
1) In the reaction Fe2O3 + 3CO ? 2Fe + 3CO2, which atom(s) has a more positive oxidation state on the product side than the
reactant side?
A) carbon and iron
B) iron
C) carbon
D) oxygen
2) The conjugate acid of HPO4 2- is
__________.
A) H3PO4
B) H4PO4+
C) PO4-3
D) H2PO4-
3) The conjugate base of H2PO4 is
__________.
A) HPO4 -2
B) H4PO4+
C) PO4-3
D) H3PO4
4) H3PO4 is the correct formula for __________.
A) nitric acid
B) carbonic acid
C) acetic acid
D) phosphoric acid
5) The conjugate base of H3PO4 is __________.
A) H3PO4
B) HPO4 -2
C) H2PO4-
D) PO4 -3
6) It takes __________ moles of nitric acid to neutralize __________ moles of barium hydroxide.
A) 2, 1
B) 2, 3
C) 1, 2
D) 1, 1
7) The precipitate formed when hydrochloric acid and sodium hydroxide are placed in a test tube is __________.
A) sodium chloride
B) sodium hydroxide
C) hydrochloric acid
D) No precipitate will be formed.
Explanation / Answer
1) In the reaction Fe2O3 + 3CO ? 2Fe + 3CO2, which atom(s) has a more positive oxidation state on the product side than the
reactant side?
A) carbon and iron
2) The conjugate acid of HPO4 2- is
__________.
D) H2PO4-
3) The conjugate base of H2PO4 is
__________.
A) HPO4 -2
4) H3PO4 is the correct formula for __________.
D) phosphoric acid
5) The conjugate base of H3PO4 is __________.
C) H2PO4-
6) It takes __________ moles of nitric acid to neutralize __________ moles of barium hydroxide.
A) 2, 1
7) The precipitate formed when hydrochloric acid and sodium hydroxide are placed in a test tube is __________.
A) sodium chloride
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