Question 1 What color will phenolphthalein appear in an acidic solution? Colorless Pink Yellow Question 2...
Question 1
What color will phenolphthalein appear in an acidic solution?
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Colorless |
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Pink |
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Yellow |
Question 2
What is the net ionic equation for the reaction of aqueous copper (II) nitrate and zinc metal?
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Cu2+ + Zn(s) → Zn(s) + Cu2+ |
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NO3- + Zn (s) → Zn(NO3) (s) |
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Cu2+ + NO3- → Cu(NO3)(s) |
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Cu2+ + Zn (s) → Zn2+ + Cu (s) |
Homework Answers
Add Answer to:
Question 1
What color will phenolphthalein appear in an acidic
solution?
Colorless
Pink
Yellow
Question 2...
QUESTION 13 When 2 mL of 0.1 M aqueous HCI (hydrochloric acid) are added to a...
QUESTION 13 When 2 mL of 0.1 M aqueous HCI (hydrochloric acid) are added to a small strip of magnesium (Mg) what happens? A violent explosion O Nothing Bubbles of hydrogen are produced and the magnesium dissolves O The magnesium turns red and the solution goes yellow QUESTION 14 1 poi Which is the balanced chemical equation describing the reaction of question 13? O Mg(aq) + HCl(aq) → MgCl(s) + H(g) O Mg(s) + HCl(aq) - MgCl (aq) + H2(g)....
Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition...
Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition of bromthymol blue to the same solution leads to a yellow color. Is the solution acidic, neutral, or basic? Which of the following can you establish about the solution: What other indicator or indicators would you want to use to determine the pH of the solution more precisely?
2. What will you observe when you have a positive test for: (a) bicarbonate anion(HCO3-)? •...
2. What will you observe when you have a positive test for: (a) bicarbonate anion(HCO3-)? • Bubbles Dobre lieT like gas o colorless (b) phosphate anion(PO43-)? 1. A student studied some reactions involving Pb2+ ion, copper(II) ion (Cu2+), and nickel(II)ion (Ni2+). The student first observed the behavior of individual solutions of Pb(NO3)2, copper(II) nitrate, Cu(NO3)2, nickel(II) nitrate, Ni(NO3)2, interacting individually with 1M HCl solution and then individually with 1M sodium hydroxide solution (NaOH). The student also added an aqueous ammonia...
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...
Dissolution of Copper Metal Copper reacts readily with strong oxidizing agents (substances that readily remove electrons...
Dissolution of Copper Metal Copper reacts readily with strong oxidizing agents (substances that readily remove electrons from other suhstances-i.e... Cu- Cu2 +2e). In this experiment, aqueous nitric acid, HNO, oxidizes copper metal to the copper(II) ion (opening photo): Cu(s) +4 HNO,(aq)Cu(NO)(aq) +2 NO (8) +2 H,0( .Cu HNO3 Cu(NO3)2 (28.1) CuSO The products of this reaction are copper(II) nitrate, Cu(NO)2 (a water-soluble salt that produces a blue solution), and nitrogen dioxide, NO2 (a dense, toxic, red-brown gas). The solution remains...
please do number 5 Redox equation thanks 2. NO, (aq) + Al(s) - NH) (aq) +...
please do number 5
Redox equation
thanks
2. NO, (aq) + Al(s) - NH) (aq) + Al(OH). (aq) in basic solution 3. Mn (aq) + NaBIO, (s) BP (aq) + MnO4 (aq) + Na* (aq) in acidic solution 4. As:O) (S) + NO, (aq) → HASO. (aq) + N,Os (aq) in acidic solution 5. Pb (s) + PbO2 (s) + H2SO. (aq) + PbSO4(s) in acidic solution Model 2 What if we switched reaction 1 between zinc solid with copper...
For the questions 1 3 of Exp. 2, b What is the color of Phenolphthalein, an...
For the questions 1 3 of Exp. 2, b What is the color of Phenolphthalein, an indicator, in basic condition? (2pt) 1. Clur ren useon Complete and balance the following chemical equations. Show your answer whether it is the precipitation (color) or gas 2. (bubble) evolution reaction if possible. (6pts) H:SO4+ 2NaOH H2O+ Na SO 2 NaHCO+H2SO. Na2SO4+ 2 H2O+CO: PbCl2 NaNO Pb(NOs):+NaCl In Exp. 2, you mixed nine kinds of known solutions with un known aqueous solution in order...
Which of the following describes the correct net ionic equation for the reaction of copper (II)...
Which of the following describes the correct net ionic equation for the reaction of copper (II) chloride solution with silver nitrate solution? CuCl2 (aq) + AgNO3 (aq) --> Cu(NO3)2 (aq) + AgCl (s) CuCl2 (aq) + 2AgNO3 (aq) --> Cu(NO3)2 (aq) + 2AgCl (s) Cu2+ (aq) + 2Cl- (aq) + 2Ag+ (aq) + 2NO3- (aq)--> Cu2+ (aq) + 2NO32- (aq) + 2AgCl (s) 2Cl- (aq) + 2Ag+ (aq) --> 2AgCl (s)
16 Cts with aqueous copper(II) chloride accord- 101. Zinc metal reacts with aqueous copper(1) ing to...
16 Cts with aqueous copper(II) chloride accord- 101. Zinc metal reacts with aqueous copper(1) ing to this equation: Zn (s) + CuCl2 (aq) → ZnCl2 (aq) + Cu (s) In this reaction, what mass of copper metal can be pro- duced from the reaction of 500 mL of 1.20-M aq. cu 2 with excess zinc? 10 103. The concentration of bromide ion may be determined by gravimetric analysis, using this reaction: Ag+ (aq) + Br (aq) → AgBr (s) A...
1. Write a balanced chemical equation for the oxidation of zinc metal (Zn) by copper(II) ions...
1. Write a balanced chemical equation for the oxidation of zinc metal (Zn) by copper(II) ions (Cu?") in a copper sulfate solution. Note that copper(II) sulfate completely dissociates in aqueous solution and forms Cu2+ (aq) and SO,- (aq) in water. Zinc metal is a solid and should be represented as Zn (3) Write a chemical equation for the decomposition of limestone (CaCO,) by heating to high temperature to drive off carbon dioxide. The other product of this decomposition reaction is...
QUESTION 13 When 2 mL of 0.1 M aqueous HCI (hydrochloric acid) are added to a small strip of magnesium (Mg) what happens? A violent explosion O Nothing Bubbles of hydrogen are produced and the magnesium dissolves O The magnesium turns red and the solution goes yellow QUESTION 14 1 poi Which is the balanced chemical equation describing the reaction of question 13? O Mg(aq) + HCl(aq) → MgCl(s) + H(g) O Mg(s) + HCl(aq) - MgCl (aq) + H2(g)....
2. What will you observe when you have a positive test for: (a) bicarbonate anion(HCO3-)? • Bubbles Dobre lieT like gas o colorless (b) phosphate anion(PO43-)? 1. A student studied some reactions involving Pb2+ ion, copper(II) ion (Cu2+), and nickel(II)ion (Ni2+). The student first observed the behavior of individual solutions of Pb(NO3)2, copper(II) nitrate, Cu(NO3)2, nickel(II) nitrate, Ni(NO3)2, interacting individually with 1M HCl solution and then individually with 1M sodium hydroxide solution (NaOH). The student also added an aqueous ammonia...
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...
Dissolution of Copper Metal Copper reacts readily with strong oxidizing agents (substances that readily remove electrons from other suhstances-i.e... Cu- Cu2 +2e). In this experiment, aqueous nitric acid, HNO, oxidizes copper metal to the copper(II) ion (opening photo): Cu(s) +4 HNO,(aq)Cu(NO)(aq) +2 NO (8) +2 H,0( .Cu HNO3 Cu(NO3)2 (28.1) CuSO The products of this reaction are copper(II) nitrate, Cu(NO)2 (a water-soluble salt that produces a blue solution), and nitrogen dioxide, NO2 (a dense, toxic, red-brown gas). The solution remains...
please do number 5
Redox equation
thanks
2. NO, (aq) + Al(s) - NH) (aq) + Al(OH). (aq) in basic solution 3. Mn (aq) + NaBIO, (s) BP (aq) + MnO4 (aq) + Na* (aq) in acidic solution 4. As:O) (S) + NO, (aq) → HASO. (aq) + N,Os (aq) in acidic solution 5. Pb (s) + PbO2 (s) + H2SO. (aq) + PbSO4(s) in acidic solution Model 2 What if we switched reaction 1 between zinc solid with copper...
For the questions 1 3 of Exp. 2, b What is the color of Phenolphthalein, an indicator, in basic condition? (2pt) 1. Clur ren useon Complete and balance the following chemical equations. Show your answer whether it is the precipitation (color) or gas 2. (bubble) evolution reaction if possible. (6pts) H:SO4+ 2NaOH H2O+ Na SO 2 NaHCO+H2SO. Na2SO4+ 2 H2O+CO: PbCl2 NaNO Pb(NOs):+NaCl In Exp. 2, you mixed nine kinds of known solutions with un known aqueous solution in order...
16 Cts with aqueous copper(II) chloride accord- 101. Zinc metal reacts with aqueous copper(1) ing to this equation: Zn (s) + CuCl2 (aq) → ZnCl2 (aq) + Cu (s) In this reaction, what mass of copper metal can be pro- duced from the reaction of 500 mL of 1.20-M aq. cu 2 with excess zinc? 10 103. The concentration of bromide ion may be determined by gravimetric analysis, using this reaction: Ag+ (aq) + Br (aq) → AgBr (s) A...
1. Write a balanced chemical equation for the oxidation of zinc metal (Zn) by copper(II) ions (Cu?") in a copper sulfate solution. Note that copper(II) sulfate completely dissociates in aqueous solution and forms Cu2+ (aq) and SO,- (aq) in water. Zinc metal is a solid and should be represented as Zn (3) Write a chemical equation for the decomposition of limestone (CaCO,) by heating to high temperature to drive off carbon dioxide. The other product of this decomposition reaction is...
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