Chapter 20--Principles of R

3 the following reaction occurs spontaneously 2 h aq

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3. The following reaction occurs spontaneously. 2 H + (aq) + Sr(s) ® Sr 2+ (aq) + H 2 (g) Write the balanced reduction half-reaction. A. 2 H + (aq) + 2 e ® H 2 (g) B. 2 H + (aq) ® H 2 (g) + 2 e C. H 2 (g) ® 2 H + (aq) + 2 e D. Sr(s) + 2 e ® Sr 2+ (aq) E. Sr(s) ® Sr 2+ (aq) + 2 e 4. The following reaction occurs spontaneously. 2 Fe 3+ (aq) + Fe(s) ® 3 Fe 2+ (aq) Write the balanced reduction half-reaction. A. Fe(s) ® Fe 3+ (aq) + e B. 3 Fe(s) + 3 e ® 3 Fe 3+ (aq) C. 2 Fe 3+ (aq) + 6 e ® 2 Fe(s) D. 2 Fe 3+ (aq) ® 2 Fe 2+ (s) + 2 e E. 2 Fe 3+ (aq) + 2 e ® 2 Fe 2+ (aq)
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5. Write a balanced half-reaction for the reduction of hydrogen peroxide to water in an acidic solution. A. 2 H 2 O 2 ( 010009000003fc0000000000d500000000000400000003010800050000000b0200 000000050000000c020f0007000400000004010d0004000000070103000500000014020 0000000d5000000410b2000cc000f000700000000000f00070000000000280000000700 00000f00000001001800000000006801000000000000000000000000000000000000ffff fffefefefffffffffffffffffffefefefefefe000000fffffffefefefffffffffffffefefeffffffffffff000000fefefeffff ff000000000000fffffffefefeffffff000000fffffffefefe020202ffffff000000fffffffefefe000000ffff ff000000000000ffffffffffff000000ffffff000000fdfdfdffffff000000fffffffefefefdfdfdffffff00000 0fefefeffffff000000000000fffffffffffffefefe000000ffffffffffff000000000000ffffffffffffffffff000 000fffffffefefe020202ffffff000000ffffffffffff000000fffffffefefeffffff010101000000fffffffefefe 000000fefefefefefefefefe000000ffffff010101ffffff000000ffffffffffffffffff000000ffffff000000 fdfdfd000000fefefeffffffffffffffffff000000010101ffffff000000fffffffefefefffffffffffffefefefefef efefefe000000fefefeffffffffffffffffffffffffffffffffffff000000030000000000 ) ® 2 H 2 O( 010009000003fc0000000000d500000000000400000003010800050000000b02000 00000050000000c020f0007000400000004010d00040000000701030005000000140200 000000d5000000410b2000cc000f000700000000000f000700000000002800000007000 0000f00000001001800000000006801000000000000000000000000000000000000fffffff efefefffffffffffffffffffefefefefefe000000fffffffefefefffffffffffffefefeffffffffffff000000fefefeffffff0 00000000000fffffffefefeffffff000000fffffffefefe020202ffffff000000fffffffefefe000000ffffff0 00000000000ffffffffffff000000ffffff000000fdfdfdffffff000000fffffffefefefdfdfdffffff000000f efefeffffff000000000000fffffffffffffefefe000000ffffffffffff000000000000ffffffffffffffffff0000 00fffffffefefe020202ffffff000000ffffffffffff000000fffffffefefeffffff010101000000fffffffefefe0 00000fefefefefefefefefe000000ffffff010101ffffff000000ffffffffffffffffff000000ffffff000000f dfdfd000000fefefeffffffffffffffffff000000010101ffffff000000fffffffefefefffffffffffffefefefefefe fefefe000000fefefeffffffffffffffffffffffffffffffffffff000000030000000000 ) + O 2 (g) B. 2 H 2 O 2 ( 010009000003fc0000000000d500000000000400000003010800050000000b0200 000000050000000c020f0007000400000004010d0004000000070103000500000014020 0000000d5000000410b2000cc000f000700000000000f00070000000000280000000700 00000f00000001001800000000006801000000000000000000000000000000000000ffff fffefefefffffffffffffffffffefefefefefe000000fffffffefefefffffffffffffefefeffffffffffff000000fefefeffff ff000000000000fffffffefefeffffff000000fffffffefefe020202ffffff000000fffffffefefe000000ffff ff000000000000ffffffffffff000000ffffff000000fdfdfdffffff000000fffffffefefefdfdfdffffff00000 0fefefeffffff000000000000fffffffffffffefefe000000ffffffffffff000000000000ffffffffffffffffff000 000fffffffefefe020202ffffff000000ffffffffffff000000fffffffefefeffffff010101000000fffffffefefe 000000fefefefefefefefefe000000ffffff010101ffffff000000ffffffffffffffffff000000ffffff000000 fdfdfd000000fefefeffffffffffffffffff000000010101ffffff000000fffffffefefefffffffffffffefefefefef efefefe000000fefefeffffffffffffffffffffffffffffffffffff000000030000000000 ) + 2e ® 2 H 2 O( 010009000003fc0000000000d500000000000400000003010800050000000b02000 00000050000000c020f0007000400000004010d00040000000701030005000000140200 000000d5000000410b2000cc000f000700000000000f000700000000002800000007000 0000f00000001001800000000006801000000000000000000000000000000000000fffffff efefefffffffffffffffffffefefefefefe000000fffffffefefefffffffffffffefefeffffffffffff000000fefefeffffff0 00000000000fffffffefefeffffff000000fffffffefefe020202ffffff000000fffffffefefe000000ffffff0 00000000000ffffffffffff000000ffffff000000fdfdfdffffff000000fffffffefefefdfdfdffffff000000f efefeffffff000000000000fffffffffffffefefe000000ffffffffffff000000000000ffffffffffffffffff0000 00fffffffefefe020202ffffff000000ffffffffffff000000fffffffefefeffffff010101000000fffffffefefe0
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00000fefefefefefefefefe000000ffffff010101ffffff000000ffffffffffffffffff000000ffffff000000f
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