Chemistry, 15.11.2019 06:31 oudithe3

13. write the following balanced reactions using cell notation. use platinum as an inert electrode, if needed. (a) mg(s) + ni2+(aq) ⟶ mg2+(aq) + ni(s) (b) 2ag+(aq) + cu(s) ⟶ cu2+(aq) + 2ag(s) (c) mn(s) + sn(no3 ) 2 (aq) ⟶ mn(no3 ) 2 (aq) + au(s) (d) 3cuno3 (aq) + au(no3 ) 3 (aq) ⟶ 3cu(no3 ) 2 (aq) + au(s)

Answers: 2

Show answers

Answers

Answer from: yuvin

A) Mg ₍s₎ | Mg²⁺₍aq₎║Ni²⁺₍aq₎ | Ni₍s₎

B) Cu₍s₎ | Cu²⁺₍aq₎║ Ag⁺ | Ag⁰₍s₎

C) Cu₍s₎ | Cu²⁺₍aq₎║ Ag⁺ | Ag⁰₍s₎

D) Pt₍s₎ | CuNO₃₍ aq₎ , Cu(NO₃)₂₍aq₎ ║ Au(NO₃)₃₍aq₎ | Au₍s₎

Explanation:

A) Mg + Ni²⁺ → Mg²⁺ + Ni

Mg⁰→ Mg²⁺ + 2e⁻ oxidation anode

Ni²⁺ + 2e⁻ → Ni⁰ reduction cathode

Mg ₍s₎ | Mg²⁺₍aq₎║Ni²⁺₍aq₎ | Ni₍s₎

anode salt bridge cathode

B) 2 Ag⁺₍aq₎ + Cu₍s₎ → Cu²⁺₍aq₎ + 2 Ag₍s₎

2 Ag⁺ + 2e⁻ → 2 Ag⁰ cathode

Cu → Cu²⁺ + 2e⁻ anode

Cu₍s₎ | Cu²⁺₍aq₎║ Ag⁺ | Ag⁰₍s₎

anode salt bridge cathode

C) Mn ₍s₎ + Sn(NO₃)₂ ₍aq₎ → Mn (NO₃)₂ ₍aq₎ + Au₍s₎

Mn⁰ → Mn²⁺+ 2e⁻ anode

Sn²⁺ + 2e⁻ → Sn⁰₍s₎ cathode

Mn₍s₎ | Mn(NO₃)₂ ₍aq₎ ║ Sn(NO₃)₂ ₍aq₎ | Sn₍s₎

anode salt bridge cathode

D) 3CuNO₃₍ aq₎ + Au(NO₃)₃₍aq₎ → 3Cu(NO₃)₂₍aq₎ + Au₍s₎

3Cu⁺ → 3Cu²⁺ + 3e⁻ anode

Au³⁺ + 3e⁻ → Au⁰ cathode

Pt₍s₎ | CuNO₃₍ aq₎ , Cu(NO₃)₂₍aq₎ ║ Au(NO₃)₃₍aq₎ | Au₍s₎

anode salt bridge cathode

Semi-reactions are noted to determine oxidation and reduction. The oxidation reaction occurs at the anode and the reduction reaction at the cathode. In the case of subsections a, b, c the electrodes may be the solid metal, while in the case d the species are in an accusative medium and require the platinum electrode.

Answer from: Quest

distance, luminosity, brightness, radius, chemical composition, and temperature

Answer from: Quest

gas

explanation:

smoke is the matter of a gas

Another question on Chemistry

Chemistry, 22.06.2019 05:40

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml

Answers: 2

Answer

Chemistry, 22.06.2019 14:40

Which statement best describes the function of enzymes?

Answers: 1

Answer

Chemistry, 22.06.2019 16:30

How do i turn 2 s into one in the products

Answers: 1

Answer

Chemistry, 22.06.2019 19:30

How might this scientific phenomena be explained? a paper clip floats on water.