a Explain why cations move towards the cathode during electrolysis b When lead iodide, PbI 2 , is electrolysed the following reactions occur Pb 2 2e Pb and 2I I 2 2e i Which of these equations describes the reaction at the cathode Explain your answer ii What is the ox no change of each iodide ion i...

a Electrolysis occurs in between two electrodes one is cathod an ...

a. Explain why cations move towards the cathode during electrolysis. b. When lead iodide, PbI 2 ,

Question:

a. Explain why cations move towards the cathode during electrolysis.

b. When lead iodide, PbI₂, is electrolysed the following reactions occur:

Pb²⁺ + 2e^– → Pb and 2I^– → I₂ + 2e^–

i. Which of these equations describes the reaction at the cathode? Explain your answer.

ii. What is the ox. no. change of each iodide ion in the reaction 2I^– → I₂ + 2e^–?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Cambridge International AS And A Level Chemistry Coursebook

ISBN: 9781316637739

2nd Edition

Authors: Lawrie Ryan, Roger Norris

See More Books

Question Posted: Sep 22, 2021 02:37 AM

See More Questions

Use graphs to determine which of these equations may be identities. a. cosx = xin(/2 - x) b. cos x = sin (x - /2) c. (csc x - cot x)(sec x + 1) = 1 d. tan x (cot x + tan x) = sec2x
Which one of these equations describes a redox reaction? H*(aq) + OH (aq) - H20(1) .a o 2KB1(aq) + Pb(N03)2(aq) .b o 2KNO3(aq) + PbBr2(s) CaBr2(aq) + H2S04(aq) - .c CasO4(s) + 2HB1(g) .d o 3C12(g) +...
which of these equations that represented in Matlab are true >> syms t fx >> y=t^2_3*t >> syms t fx >> y=t^2-3*t >> clear >> syms t >> y=t^2-3t
Terrance is a 13-year-old 8th grader, who is an average student. He is rarely ever disruptive in class and gets along well with his peers. His teacher always noticed that he was normally high-strung,...
Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy and storage. Let x be a random variable that represents the number of milligrams of porphyrin per...
1. Create a time-phased assembly chart to determine when the 10 cars can be delivered. 2. What adjustments are needed in inventory levels, lead times, and batch sizes to fill an additional customer...
IN E STIN G IN RE S ID E N TIAL IN CO M E -P RO D U CIN G P RO P E RTY. Hope Sheppard is thinking about investing in residential income-producing property that she can purchase for $200,000. Hope can...
On the first day of the fiscal year, Shiller Company borrowed $85,000 by giving a seven year, 7% installment note to Soros Bank. The note requires annual payments of $15,772, with the first payment...
Bridgeport Inc., had the following condensed balance sheet at the end of operations for 2019. Cash BRIDGEPORT INC. BALANCE SHEET DECEMBER 31, 2019 $8,600 Current liabilities 29,000 Long-term notes...
Your client Jim Clark, president of Heavy Duty Fences, Inc. did business with Carol Smith, president of Pools for All, Inc. Occasionally, during phone conversations, at Smith's request, Clark would...
a. Why does an ionic compound have to be molten to undergo electrolysis? b. Give two properties of graphite that make it a suitable material for use as an electrode. Explain your answers.
a. In the presence of acid, the manganate(VII) ion is a powerful oxidising agent. The half-equation for its reduction in acid solution is: MnO 4 (aq) + 8H + (aq) + 5e Mn 2+ (aq) + 4H 2 O(l) E =...
Determine the relationship between set A and set B if A B = B
Sketch the curves with equations given in question 3 parts a, b, c and d, labelling any stationary points with their coordinates. Data from Question 3 Find the coordinates of the points where the...
Trace the polygon and point P on paper. Then draw a rotation of the polygon the given number of degrees about P. 130 Q R T P S
Name any devices other than the three mentioned in Section 31. 1-battery, solar cell, and electric generator that can act as a power source in an electric circuit. Data from Section 31. 1...
A thick resistor and a thin resistor of the same length and material are connected in series, as shown in Figure 31. 29. Which resistor has $(a)$ the greater potential difference across it and...
Note that the amount of 25k that has already been spent on developing the website is not included in this analysis, as it represents a sunk cost. The decision rule for ARR is that a project should be...
On June 30, 2021, the Esquire Company sold some merchandise to a customer for $30,000. In payment, Esquire agreed to accept a 6% note requiring the payment of interest and principal on March 31,...
Describe the general ways that the revised Form 990, applicable for tax year 2008 and beyond, is different from previous versions.
Predict the products for each of the following: a. b. c. d. e. f. 1) O3 2) DMS 3) Excess LAH 4) H20 1) O3 2) DMS 3) Excess LAH 4) H20
Explain why the oscillations in the two-phase coexistence region using the RedlichKwong and van der Waals equations of state (see Figure 7.4) do not correspond to reality. Figure 7.4 140 120 100 304...
Propose a plausible mechanism for each of the following transformations. a. b. 1) MeMgBr 2) H20 1) Excess MeMgBr 2) H20
Which of the following statements is true? Financial measures tend to be lag indicators that report on the results of past actions. LA profit center is responsible for generating revenue, but it is...
Andretti Company has a single product called a Dak. The company normally produces and sells 8 0 , 0 0 0 Daks each year at a selling price of $ 5 6 per unit. The company s unit costs at this level of...
What are the major characteristics of plant assets? Choose one category of PP&E (land, land improvements, buildings or equipment) and describe the costs that may be capitalized with this asset.

a. Explain why cations move towards the cathode during electrolysis. b. When lead iodide, PbI 2 ,

Question:

Step by Step Answer:

a Electrolysis occurs in between two electrodes one is cathod an...View the full answer

Cambridge International AS And A Level Chemistry Coursebook

Students also viewed these Sciences questions