Proin dui sodales imperdiet sit sapien fames
November 20, 2014
Describe the purpose of a ddos attack
June 21, 2017

U5B

U5B
2) 1.0 M Pd(NO3)2 is mixed with various reagents and the following results are obtained
Mrs) Elicia)
Pd2+(aq) reaction no reaction
The order of oxidizing agents from strongest to weakest is 7 7+
A. Ni}. Br:- Pd’-’* B. Brz, Pd2+. Ni” (3. Brz, Ni”, Pd” D. Ni“, Pd”, Br:
3) A student investigating redox reactions recorded these results.
V2+ + Te2″-> no reactions
U4+ + Te} -9 U3+ + Te
Arranged from strongest to weakest, the strengths of the oxidizing agents are
A- V”, Te. U‘“ B. U“, Te, v” c. U”, Tez‘, v” D. V”. ref“. 113+
4) Which of these is the strongest reducing agent?
A- Mn B. Mn} C. acidified MnOz D. acidified MnOf
5) Which of these equations represents the reduction half-reaction that occurs when a piece of zinc metal is placed
into a solution of silver nitrate?
A- Ag + 16- -> Ag B. Ag2+ + Ze- -> Zn C. Ag -> Ag + le’ D. Zn -> Zn2+ + 2e”
6) Some 82082_(aq)9 80427“), Co27“) and Cum are placed in a container at standard conditions. Which Of these
equations represents the predicted spontaneous reaction?
A. 25042″ + Cu -> szogz‘ + cu2+ c. 52082“ + off -> 25042“ + Cu
B. szof‘ + Cu -> 25042“ + Cu2+ D. 230? + Cu2+ -> so?“ + Cu
7) Which of these chemical species is capable of oxidizing silver?
A. F‘ B. K+ c. Br2 D. Mg
8) A spontaneous reaction occurs when a piece of zinc is placed into a 1.0 M solution of Pb(NO3)3. The oxidizing
agent in this reaction is.
A. Zn B. Pb c. Pb2+ D. 2112+
9) Under standard conditions, which of these will react with the reducing agent Hgog?
A. 12 B. Br2 c. Cr3+ D. NF”
10) Which of these is non-spontaneous?
A. Pb(NO3)2 + N] -) Pb + N1(NO3)2 C. Co<NO3>2 + Ni -) Co + N1(NO3)2
B. 2AgNO3 + Ni 9 2Ag + Ni(NO3)3 D. 2Au(NO3)3 + 3Ni -> 2Au + 3Ni(NO3)3
l 1) Using the table of standard r ‘_ ‘on potentials, I- will likely react spontaneously with 1+
A. CO B. Br: C- C] D. Cu“
b t ‘th Br ‘7
12) Which ofthese spec1es wrll reac wrth C]; ut no W1 2-
A, Mn B. acidified Mn” c. acidified 1an2 D. ac1d1fied Mno4
13) Which of these reactions is spontaneous? 7+ 2+ 1: 5 4+
2 ‘ + Sn -> e + n
A. Fe2+ + Sn -> Fe + Sn + C. Fe” 4+ F 3+ S a.
2 , “ + Sn -> e‘ + n“
B. Fe3++Sn->Fe2++Sn+ D Fe
2) 1.0 M Pd(NO3)2 is mixed with various reagents and the following results are obtained
Mrs) Elicia)
Pd2+(aq) reaction no reaction
The order of oxidizing agents from strongest to weakest is 7 7+
A. Ni}. Br:- Pd’-’* B. Brz, Pd2+. Ni” (3. Brz, Ni”, Pd” D. Ni“, Pd”, Br:
3) A student investigating redox reactions recorded these results.
V2+ + Te2″-> no reactions
U4+ + Te} -9 U3+ + Te
Arranged from strongest to weakest, the strengths of the oxidizing agents are
A- V”, Te. U‘“ B. U“, Te, v” c. U”, Tez‘, v” D. V”. ref“. 113+
4) Which of these is the strongest reducing agent?
A- Mn B. Mn} C. acidified MnOz D. acidified MnOf
5) Which of these equations represents the reduction half-reaction that occurs when a piece of zinc metal is placed
into a solution of silver nitrate?
A- Ag + 16- -> Ag B. Ag2+ + Ze- -> Zn C. Ag -> Ag + le’ D. Zn -> Zn2+ + 2e”
6) Some 82082_(aq)9 80427“), Co27“) and Cum are placed in a container at standard conditions. Which Of these
equations represents the predicted spontaneous reaction?
A. 25042″ + Cu -> szogz‘ + cu2+ c. 52082“ + off -> 25042“ + Cu
B. szof‘ + Cu -> 25042“ + Cu2+ D. 230? + Cu2+ -> so?“ + Cu
7) Which of these chemical species is capable of oxidizing silver?
A. F‘ B. K+ c. Br2 D. Mg
8) A spontaneous reaction occurs when a piece of zinc is placed into a 1.0 M solution of Pb(NO3)3. The oxidizing
agent in this reaction is.
A. Zn B. Pb c. Pb2+ D. 2112+
9) Under standard conditions, which of these will react with the reducing agent Hgog?
A. 12 B. Br2 c. Cr3+ D. NF”
10) Which of these is non-spontaneous?
A. Pb(NO3)2 + N] -) Pb + N1(NO3)2 C. Co<NO3>2 + Ni -) Co + N1(NO3)2
B. 2AgNO3 + Ni 9 2Ag + Ni(NO3)3 D. 2Au(NO3)3 + 3Ni -> 2Au + 3Ni(NO3)3
l 1) Using the table of standard r ‘_ ‘on potentials, I- will likely react spontaneously with 1+
A. CO B. Br: C- C] D. Cu“
b t ‘th Br ‘7
12) Which ofthese spec1es wrll reac wrth C]; ut no W1 2-
A, Mn B. acidified Mn” c. acidified 1an2 D. ac1d1fied Mno4
13) Which of these reactions is spontaneous? 7+ 2+ 1: 5 4+
2 ‘ + Sn -> e + n
A. Fe2+ + Sn -> Fe + Sn + C. Fe” 4+ F 3+ S a.
2 , “ + Sn -> e‘ + n“
B. Fe3++Sn->Fe2++Sn+ D Fe W Write the letter of the BEST answer on your own paper. (0.5 marks each)
1) Electrolysis is a process which
A’ is Spontaneous C. has a positive E° value
B. produces a voltage D. converts electrical energy into chemical energy
2) In the electrolysis of aqueous sodium iodide, the reaction at the anode is
A. Na* + e’ -> Na c. 2H30 -> 02 + 4H+ + 4c”
B. 2H20 + 2e’ -> H3 + 2 OH” D. 21‘ -9 13 + 2e’
3) During the electrolysis of aqueous Nal, the product formed at the cathode is
A. Na (2.12
B. H: D. 03
4) During electrolysis
A. an exothermic reaction occurs
B. a spontaneous reaction occurs
C. chemical energy is transformed into electrical energy
D. electrical energy is transformed into chemical energy
5) Which of these ions can be reduced from an aqueous solution?
A. Ba” (3. Sn“
B At“ D. Na+
6 ) The substance formed at the anode during the electrolysis of 1.0 M NaCl is
A. chlorine C. sodium
8 oxygen .. _ D. hydrogen
V , Continued on the next

 

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