(a) Select all of the correct statements about the relative acid strengths of pa
ID: 971769 • Letter: #
Question
(a) Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below.
(A)HCl is a stronger acid than H2S because Cl is more electronegative than S.
(B)HSO4- is a stronger acid than H2SO4 because it has more charge (is more unstable).
(C)HBr is a stronger acid than HF because Br atoms are larger than F atoms.
(D)H3AsO4 is a stronger acid than HAsO42- because it has more acidic H atoms.
(E)HI is a stronger acid than HCl because I atoms are larger than Cl atoms.
(F)H2Se is a stronger acid than H2O because Se atoms are larger than O atoms.
>>>>>>>>(b)Choose all of the statements from below which are true about oxidation and reduction.<<<<<<<<<
(A)Oxidation and reduction are opposite processes with respect to bookkeeping electrons.
(B)Oxidation is what happens when an element in a substance increases its oxidation number.
(C)Electrons appear on the left side of an oxidation half reaction.
(D)An oxidant is an oxidizing agent, which becomes oxidized during the course of a redox reaction.
(E)Reduction is what happens when an element in a substance loses electrons.
(F)Electrons appear on the right side of a reduction half reaction.
(G)A reductant is a reducing agent, which becomes reduced during the course of a redox reaction.
Explanation / Answer
a)
(A) HCl is a stronger acid than H2S because Cl is more electronegative than S.
(C) HBr is a stronger acid than HF because Br atoms are larger than F atoms.
(D) H3AsO4 is a stronger acid than HAsO42- because it has more acidic H atoms.
(E) HI is a stronger acid than HCl because I atoms are larger than Cl atoms.
(F) H2Se is a stronger acid than H2O because Se atoms are larger than O atoms.
b)
(A) Oxidation and reduction are opposite processes with respect to bookkeeping electrons.
(B) Oxidation is what happens when an element in a substance increases its oxidation number.
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