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7) One method for removal of metal ions from a solution is to convert the metal...
Many metal ions are precipitated from a solution by the sulfide ion. As an example, consider...
Many metal ions are precipitated from a solution by the sulfide ion. As an example, consider treating a solution of copper(II) sulfate with sodium sulfide solution: CuSO4(aq) + Na2S(aq) → CuS(s) + Na2SO4(aq) What volume of 0.104 M Na2S solution would be required to precipitate all of the copper(II) ion from 13.4 mL of 0.120 M CuSO4 solution? Volume = mL Submit Answer Try Another Version 7 item attempts remaining Generally, only the carbonates of the Group 1 elements and...
NONTON Aluminum ions may be precipitated from aqueous solution by the addition of hydroxide ion, forming...
NONTON Aluminum ions may be precipitated from aqueous solution by the addition of hydroxide ion, forming Al(OH)3. A large excess of hydroxide ion must not be added, however, because the precipitate of Al(OH)3 will redissolve as a soluble compound containing aluminum ions, and hydroxide ions begin to form. How many grams of solid NaOH should be added to 10.0 mL of 0.131 M AICI: to just precipitate all the aluminum?
An acidic solution is 2 mM in each of the following metal ions: Zn2+, Cu2+, Co2+,...
An acidic solution is 2 mM in each of the following metal ions: Zn2+, Cu2+, Co2+, Ca2+. a) Which of the metals would precipitate as their hydroxides at pH = 6.00? (Select all that apply. See theappendix.) -zinc -copper -cobalt -calcium b) Which of the metals would precipitate as their hydroxides at pH = 8.00? -zinc -copper -cobalt -calcium c) At what pH do the metal hydroxides begin to participate? Zn(OH)2 ____ Cu(OH)2 ____ Co(OH)2 ____ Ca(OH)2 ____ Substance Ksp...
A. How many grams of nickel metal will be deposited from a solution that contains Ni2+ions...
A. How many grams of nickel metal will be deposited from a solution that contains Ni2+ions if a current of 1.21 A is applied for 48.0minutes. B. How many grams of nickel metal will be deposited from a solution that contains Ni2+ions if a current of 0.664 A is applied for 38.0minutes. ______Grams C. How many grams of cobalt metal will be deposited from a solution that contains Co2+ions if a current of 0.809 A is applied for 67.8minutes. ___________grams
7. (20 pts) A scientist has 100 mL of a solution that contains four metal ions,...
7. (20 pts) A scientist has 100 mL of a solution that contains four metal ions, Ca2, Cu2, Pb2, and K*. He takes 50 mL and adds 2.5 grams of Na2SO4 which precipitates the Ca2 and the Pb2. This precipitate is filtered form the solution and redissolved in 20 mL of 6 M HNO3. He then adds 20 mL of 1.005 M EDTA and back titrates with 23.54 mL of 0.1954 M Zn2 He then adds a masking agent that...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn electrode inserted in a solution...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
The CuCu ions undergo reduction by accepting two electrons from the copper electrode (cathode) and depositing...
The CuCu ions undergo reduction by accepting two electrons from
the copper electrode (cathode) and depositing on the electrode as
Cu(s)Cu(s). The reduction half-cell reaction that takes place at
the cathode is
Cu^2+(aq)+2e^−→Cu(s)Cu^2+(aq)+2e^-→Cu(s)
The electrons lost by the ZnZn metal are gained by the CuCu ion.
The transfer of electrons between ZnZn metal and CuCu ions is made
possible by connecting the wire between the ZnZn electrode and the
CuCu electrode. Thus, in the voltaic cell, the electrons flow
through...
Please help me with 3 to 4 Post-Lab Questions 1. Write chemical equations that represent the potential reactions of...
Please help me with 3 to 4
Post-Lab Questions 1. Write chemical equations that represent the potential reactions of copper metal with the four metal ion solutions. Based on your observations, which reactions occurred and which did not? Ocde of reactinly smetals MaZn Ni> Pb > Co M 2n Ni, Pb Since reactive than Cu, no and 2.40,), are more Lopper hetol Ma (wo,), N.CNO,), , Po Cao) indi vidally will reaction occur betansn Galvanized steel, used in construction and...
Please help me! Thank you so much! 2. Give chemical equations for the following: a. Precipitating the silver ion b...
Please help me! Thank you so much!
2. Give chemical equations for the following: a. Precipitating the silver ion by adding hydrochloric acid b. Precipitating the copper ion by adding sodium sulfide c. Dissolving the copper sulfide in concentrated nitric acid to precipitate sulfur. (The orange gas that you saw is NO, product, and sulfur precipitate can be shown as "S") d. Confirming the identity of the ion as copper by adding potassium ferricyanide. (Pote is only a spectator ion...
Chemical Reactions For each reaction you observed, the names of the reactants and products are given...
Chemical Reactions For each reaction you observed, the names of the reactants and products are given below. You must: 1. Write the correct formula for each reactant and product. Balance each equation. 2. A. Combination reactions magnesium oxide 1. Magnesium + oxygen (unbalanced) Mg+ O, MgO sulfur dioxide 2. Sulfur + oxygen B. Analysis of the Copper Content of a Penny po zinc chloride + hydrogen zinc + hydrochloric acid HCI ZnCl, 1. (unbalanced) н, Zn + C. Single Replacement...
Many metal ions are precipitated from a solution by the sulfide ion. As an example, consider treating a solution of copper(II) sulfate with sodium sulfide solution: CuSO4(aq) + Na2S(aq) → CuS(s) + Na2SO4(aq) What volume of 0.104 M Na2S solution would be required to precipitate all of the copper(II) ion from 13.4 mL of 0.120 M CuSO4 solution? Volume = mL Submit Answer Try Another Version 7 item attempts remaining Generally, only the carbonates of the Group 1 elements and...
NONTON Aluminum ions may be precipitated from aqueous solution by the addition of hydroxide ion, forming Al(OH)3. A large excess of hydroxide ion must not be added, however, because the precipitate of Al(OH)3 will redissolve as a soluble compound containing aluminum ions, and hydroxide ions begin to form. How many grams of solid NaOH should be added to 10.0 mL of 0.131 M AICI: to just precipitate all the aluminum?
7. (20 pts) A scientist has 100 mL of a solution that contains four metal ions, Ca2, Cu2, Pb2, and K*. He takes 50 mL and adds 2.5 grams of Na2SO4 which precipitates the Ca2 and the Pb2. This precipitate is filtered form the solution and redissolved in 20 mL of 6 M HNO3. He then adds 20 mL of 1.005 M EDTA and back titrates with 23.54 mL of 0.1954 M Zn2 He then adds a masking agent that...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
The CuCu ions undergo reduction by accepting two electrons from
the copper electrode (cathode) and depositing on the electrode as
Cu(s)Cu(s). The reduction half-cell reaction that takes place at
the cathode is
Cu^2+(aq)+2e^−→Cu(s)Cu^2+(aq)+2e^-→Cu(s)
The electrons lost by the ZnZn metal are gained by the CuCu ion.
The transfer of electrons between ZnZn metal and CuCu ions is made
possible by connecting the wire between the ZnZn electrode and the
CuCu electrode. Thus, in the voltaic cell, the electrons flow
through...
Please help me with 3 to 4
Post-Lab Questions 1. Write chemical equations that represent the potential reactions of copper metal with the four metal ion solutions. Based on your observations, which reactions occurred and which did not? Ocde of reactinly smetals MaZn Ni> Pb > Co M 2n Ni, Pb Since reactive than Cu, no and 2.40,), are more Lopper hetol Ma (wo,), N.CNO,), , Po Cao) indi vidally will reaction occur betansn Galvanized steel, used in construction and...
Please help me! Thank you so much!
2. Give chemical equations for the following: a. Precipitating the silver ion by adding hydrochloric acid b. Precipitating the copper ion by adding sodium sulfide c. Dissolving the copper sulfide in concentrated nitric acid to precipitate sulfur. (The orange gas that you saw is NO, product, and sulfur precipitate can be shown as "S") d. Confirming the identity of the ion as copper by adding potassium ferricyanide. (Pote is only a spectator ion...
Chemical Reactions For each reaction you observed, the names of the reactants and products are given below. You must: 1. Write the correct formula for each reactant and product. Balance each equation. 2. A. Combination reactions magnesium oxide 1. Magnesium + oxygen (unbalanced) Mg+ O, MgO sulfur dioxide 2. Sulfur + oxygen B. Analysis of the Copper Content of a Penny po zinc chloride + hydrogen zinc + hydrochloric acid HCI ZnCl, 1. (unbalanced) н, Zn + C. Single Replacement...
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