Homework Answers
Both Stoichiometry and charge carried by the ions have to be balanced in the chemical reactions.
22. Zn2+(aq) + 2OH−(aq) = Zn(OH)2(s)(ppt) ---Zn(OH)2 precipitate is formed, but in excess OH- this dissolves again according to following reaction:
Zn(OH)2(s)+2OH−(aq) = [Zn(OH)4]2−(aq)
Thus net reaction is:
Zn2+(aq) + 4OH−(aq)(excess) = [Zn(OH)4]2−(aq)
23. Zn(OH)2(s) + 2 H+ = Zn2+ + 2 H2O
24. 3Zn2+(aq) + 2K+(aq) + 2[Fe(CN)6]4-(aq) = Zn3K2[Fe(CN)6]2(s)
25. 2Ni2+ + 4NH3(aq) + 4H2O(l) = 2 Ni(OH)2 + 4 NH4+
Add Answer to:
22. Zn + OH (a)(excess)- (aq) 23. Zn(OH)2 (s)+ H (aq) 24. Zn(a) K(a)Fe(CN) (aq) 25....
Complete and balance the following equations in net ionic form and indicate the phase. 17 Zn2...
Complete and
balance the following equations in net ionic form and indicate the
phase.
17 Zn2 NHH,O (until basic) 19. Zn2+4w" NH3(aq)(excess)→ 20 Zn2OH (until basic)-> 21. Zn(OH).(s) + OH-cao(excess) → 22. Zn2+ (m) + OH-(aq,(excess)→ (ag) (aq) Zn2+ (aq) + N产(au) + Ni(OH)2(s) + Ni2+ (aq) + 24. K+ (aq, + Fe(CN)-(ao → 25. NH, (aq, + H,00, (until basic)-→ 28, NH3(aq'(excess)→ 27, NH, (excess) 28. Ni2+ (aq) + OH-(s) → Ba2+ (aq) + SO42-(aq) → 30.
25, Ni +UNH, (g) + 'H.0 (until basi 26. Ni(OH)2 + NH, ((excess) → 27. Ni2fag+...
25, Ni +UNH, (g) + 'H.0 (until basi 26. Ni(OH)2 + NH, ((excess) → 27. Ni2fag+ NH, (excess) → 28. Ni2+ (aq) + OH(aq) → 29. Ni(OH)2() + H+ (aq) → 30. Batag)+ Sotag) → 8-72
Date: 1117 mework 10 - Ch. 21-23 A) CN B)NO c)r D) CO Name: E ) en 24. Place the ligands, CN-, Br., H2O, and OH-in o...
Date: 1117 mework 10 - Ch. 21-23 A) CN B)NO c)r D) CO Name: E ) en 24. Place the ligands, CN-, Br., H2O, and OH-in order from least to greatest according ability to split the d orbital energy level. A) CN-, OH, H2O, Br- C) Br,H20, CN-, OH- B) Br., OH, H2O, CN- D) None of the above 25. The charge on the central metal ion in (Cr(NH3)(CO3)2+ is A)-1. B) 0. C) 1. D) 3. E) 5 26....
15. CHOH). (+ H,02()+ OH-> 16. Cro. (ag) + Pb ) → 17. Znag) + NH3(g)...
15. CHOH). (+ H,02()+ OH-> 16. Cro. (ag) + Pb ) → 17. Znag) + NH3(g) + H20 (until basie) → 18. Zn(OH)2 (+ NH3(y (excess) → 19. Zn? (+ NH3(aq) (excess) → Znag) + OH() (until basic) 21. Zn(OH),(s) + OH(a) (excess) → 22. Znag) + OH(a) (excess) → 23. Zn(OH)2 (+ H (2) ►
Calculate the standard free-energy change at 25 ∘C for the following reaction: Mg2+(aq) + Zn(s) → Mg(s) + Zn2+(aq) Expre...
Calculate the standard free-energy change at 25 ∘C for the following reaction: Mg2+(aq) + Zn(s) → Mg(s) + Zn2+(aq) Express your answer to three significant figures and in units of kJ/mol. Consider constructing a voltaic cell with one compartment containing a Zn(s) electrode immersed in a Zn2+ aqueous solution and the other compartment containing an Al(s) electrode immersed in an Al3+ aqueous solution. What is the spontaneous reaction in this cell? Group of answer choices Zn + Al3+ → Al...
1)Give the formula for a reagent that will dissolve Zn(OH)2, but not Ni(OH)2. Include net ionic...
1)Give the formula for a reagent that will dissolve Zn(OH)2, but
not Ni(OH)2. Include net ionic
equations for any reactions that occur.
Here is the refrence attached:
ANALYSIS OF THE ALUMINUM-NICKEL GROUP (GROUP III) Solutions contanang Fe Fe3 A广Cr Co2 NY Mn' Zn2 Ba2 Ca", Mg". Na". K., NH. INH,Cl, excess NH OH Procedure 15 Al(OH), Cr(OH), Co(NH.)63t, Ni(NHk". blue Fe(OH), red Fe(OH)2. green Zn(NHJu". Mn". Ba". Cr". Mg". Na'. K., NH, white green amber colorless [ONH) S] Procedure 15...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What,...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What, if anything, should you do to test for Co2 and Ni*? Qual Scheme: Group III: Co?(pink), N1" (green), Fet+ (yellow), Cr" (blue-grey), Mn(pink), AP (colorless), Zn? (colorless). Unknown B Solution: Use 10 dps of unknown sample and 10 dps of H20 and go to Procedure for Group III. Procedure for Group II: Add 2 dps NHCl soln, add 6M NHOH until just basic to...
need help with #20 and #48 please add proper charges, balanced equation, and proper subscript (aq,solid,liquid,...
need help with #20 and #48 please add proper charges, balanced
equation, and proper subscript (aq,solid,liquid, or gas)
20. Give the formula for a chemical substance that will yield a precipitate with CoCl2 solution, but not with ZnCl, solution (if excess of substance is required, so state). Include net ionic equations for any reactions that occur. ANALYSIS OF THE ALUMINUM-NICKEL GROUP (GROUP III) Solutions containing Fo?", Fe, Co, Nid", Mn?, Art, Cr". Zn?N, Ba?". Ca, Mg, Na, K [NHACI, excess...
Cars > 1.5 tons Highway MPG (miles per gallon) 25 31 24 28 23 30 28...
Cars > 1.5 tons Highway MPG (miles per gallon) 25 31 24 28 23 30 28 30 26 24 25 26 27 25 29 26 28 27 30 30 22 24 28 28 28 28 27 26 26 26 26 25 29 28 26 28 25 26 21 21 24 23 20 23 22 20 Find the standard deviation, quartiles and fences of the given data.
A solution is made 1.1 x 10-3 M in Zn(NO3)2 and 0.150M in NH3. After thw...
A solution is made 1.1 x 10-3 M in Zn(NO3)2 and
0.150M in NH3. After thw solution reaches equilibrium, what
concentration of Zn2+ (aq) remains? Look up the values
of Kf in your book on page 779 (Table 17.3).
Complex Ion K Complex Ion K 1.7 x 1013 Ag(CN)2 1 X 1021 Cu(NH3)4 Ag(NH3)2+ 1.7 x 107 1.5 x 1035 Fe(CN)64 Fe(CN)63 Ag(S203)23 2.8 x 1013 2 x 1043 AIF 3 7 x 1019 Hg(CN). 1.8 X 1041 Al(OH)4 3...
Complete and
balance the following equations in net ionic form and indicate the
phase.
17 Zn2 NHH,O (until basic) 19. Zn2+4w" NH3(aq)(excess)→ 20 Zn2OH (until basic)-> 21. Zn(OH).(s) + OH-cao(excess) → 22. Zn2+ (m) + OH-(aq,(excess)→ (ag) (aq) Zn2+ (aq) + N产(au) + Ni(OH)2(s) + Ni2+ (aq) + 24. K+ (aq, + Fe(CN)-(ao → 25. NH, (aq, + H,00, (until basic)-→ 28, NH3(aq'(excess)→ 27, NH, (excess) 28. Ni2+ (aq) + OH-(s) → Ba2+ (aq) + SO42-(aq) → 30.
25, Ni +UNH, (g) + 'H.0 (until basi 26. Ni(OH)2 + NH, ((excess) → 27. Ni2fag+ NH, (excess) → 28. Ni2+ (aq) + OH(aq) → 29. Ni(OH)2() + H+ (aq) → 30. Batag)+ Sotag) → 8-72
Date: 1117 mework 10 - Ch. 21-23 A) CN B)NO c)r D) CO Name: E ) en 24. Place the ligands, CN-, Br., H2O, and OH-in order from least to greatest according ability to split the d orbital energy level. A) CN-, OH, H2O, Br- C) Br,H20, CN-, OH- B) Br., OH, H2O, CN- D) None of the above 25. The charge on the central metal ion in (Cr(NH3)(CO3)2+ is A)-1. B) 0. C) 1. D) 3. E) 5 26....
15. CHOH). (+ H,02()+ OH-> 16. Cro. (ag) + Pb ) → 17. Znag) + NH3(g) + H20 (until basie) → 18. Zn(OH)2 (+ NH3(y (excess) → 19. Zn? (+ NH3(aq) (excess) → Znag) + OH() (until basic) 21. Zn(OH),(s) + OH(a) (excess) → 22. Znag) + OH(a) (excess) → 23. Zn(OH)2 (+ H (2) ►
1)Give the formula for a reagent that will dissolve Zn(OH)2, but
not Ni(OH)2. Include net ionic
equations for any reactions that occur.
Here is the refrence attached:
ANALYSIS OF THE ALUMINUM-NICKEL GROUP (GROUP III) Solutions contanang Fe Fe3 A广Cr Co2 NY Mn' Zn2 Ba2 Ca", Mg". Na". K., NH. INH,Cl, excess NH OH Procedure 15 Al(OH), Cr(OH), Co(NH.)63t, Ni(NHk". blue Fe(OH), red Fe(OH)2. green Zn(NHJu". Mn". Ba". Cr". Mg". Na'. K., NH, white green amber colorless [ONH) S] Procedure 15...
3. Suppose after adding HCl to ppt 16, you do not have any black solid. What, if anything, should you do to test for Co2 and Ni*? Qual Scheme: Group III: Co?(pink), N1" (green), Fet+ (yellow), Cr" (blue-grey), Mn(pink), AP (colorless), Zn? (colorless). Unknown B Solution: Use 10 dps of unknown sample and 10 dps of H20 and go to Procedure for Group III. Procedure for Group II: Add 2 dps NHCl soln, add 6M NHOH until just basic to...
need help with #20 and #48 please add proper charges, balanced
equation, and proper subscript (aq,solid,liquid, or gas)
20. Give the formula for a chemical substance that will yield a precipitate with CoCl2 solution, but not with ZnCl, solution (if excess of substance is required, so state). Include net ionic equations for any reactions that occur. ANALYSIS OF THE ALUMINUM-NICKEL GROUP (GROUP III) Solutions containing Fo?", Fe, Co, Nid", Mn?, Art, Cr". Zn?N, Ba?". Ca, Mg, Na, K [NHACI, excess...
A solution is made 1.1 x 10-3 M in Zn(NO3)2 and
0.150M in NH3. After thw solution reaches equilibrium, what
concentration of Zn2+ (aq) remains? Look up the values
of Kf in your book on page 779 (Table 17.3).
Complex Ion K Complex Ion K 1.7 x 1013 Ag(CN)2 1 X 1021 Cu(NH3)4 Ag(NH3)2+ 1.7 x 107 1.5 x 1035 Fe(CN)64 Fe(CN)63 Ag(S203)23 2.8 x 1013 2 x 1043 AIF 3 7 x 1019 Hg(CN). 1.8 X 1041 Al(OH)4 3...
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