A Petri dish is filled with an unreactive gel that contains Fe(CN)6 (ag), phenolphthalein (which turns...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A Petri dish is filled with an unreactive gel that contains Fe(CN)6³ (ag), phenolphthalein (which turns pink in the presence of hydroxide ions), and liquid water. An iron nail is placed in the Petri dish and is exposed to oxygen gas in the air. After a few hours, the nail begins to corrode. The diagram below represents the changes that occur in the Petri dish. The dark blue areas are caused by the formation of Fe3 [Fe(CN)6]2(aq), which contains Fe²+ (aq) ions. Select one: O2(g) + 4H+ The pink/red color in the gel around the nail is produced by the phenolphthalein reacting with products from which of these half-reactions? a. 2H₂O (1) → b. O2(g) + 2H₂O(1) +4e c. O2(g) + 4H+ (aq) + 4e¯ → d. O2(g) + 2H+ (a (aq) + 2e → → (aq) + 4e Petri dish Dark blue 40H*(aq) 2H₂O(1) H₂O (1) Pink/red Nail Dark blue Unreactive gel (clear/colourless) A Petri dish is filled with an unreactive gel that contains Fe(CN)6³ (ag), phenolphthalein (which turns pink in the presence of hydroxide ions), and liquid water. An iron nail is placed in the Petri dish and is exposed to oxygen gas in the air. After a few hours, the nail begins to corrode. The diagram below represents the changes that occur in the Petri dish. The dark blue areas are caused by the formation of Fe3 [Fe(CN)6]2(aq), which contains Fe²+ (aq) ions. Select one: O2(g) + 4H+ The pink/red color in the gel around the nail is produced by the phenolphthalein reacting with products from which of these half-reactions? a. 2H₂O (1) → b. O2(g) + 2H₂O(1) +4e c. O2(g) + 4H+ (aq) + 4e¯ → d. O2(g) + 2H+ (a (aq) + 2e → → (aq) + 4e Petri dish Dark blue 40H*(aq) 2H₂O(1) H₂O (1) Pink/red Nail Dark blue Unreactive gel (clear/colourless)
Expert Answer:
Answer rating: 100% (QA)
ANSWER c O 2 g 4 H aq 4 e 2 H 2 O EXPLANATION The transfer of electrons from one atom to another i... View the full answer
Related Book For
Management Science The Art of Modeling with Spreadsheets
ISBN: 978-1118582695
4th edition
Authors: Stephen G. Powell, Kenneth R. Baker
Posted Date:
Students also viewed these physics questions
-
Having received a bonus of $30,000 for accepting early retirement in July 2000, a companys project manager invested $9,000 in a municipal bond paying 3.69%, $14,000 in a money market fund paying...
-
In the early 1980s, New England Electric System (NEES) was deciding how much to bid for the salvage rights to a grounded ship, the SS Kuniang. If the bid were successful, the ship could be repaired...
-
Advertising is more than just deciding how much to spend; it involves developing a message that appeals to your target audience. A good advertisement contains the following elements: copy (the...
-
What are the types of production systems in aquaculture?
-
What is propulsive efficiency? How is it determined?
-
What are the two approaches to estimate the value of a business? List the methods of estimation in each approach.
-
Explain the value of finance and budgeting systems .
-
Moore, Aiken, and Payne is a critical care dental clinic serving the emergency needs of the general public on a first-come, first-served basis. The clinic has five dental chairs, three of which are...
-
Assume that a company has the following inventory items and quantities: Inventory Item Quantity Unit Cost Market Price per Unit A B C E 125 $150 521 $35 421 $40 300 $12 900 $5 $104 $60 $21 $15 $8...
-
The following picture shows four routers, A,B,C,D. Packets travel from A and B to D. All routers including C operate in FIFO order. If two packets arrive at C at the same time, give priority to...
-
The risk-free interest rate is the same as the data in Problem 4.5. What is the value of the FRA that begins after a year when it pays LIBOR for three months on a principal of 1,000,000 months of...
-
Given the data below answer the question. Issuing Company Fair Value Bernard Co. $34,650 Chadwick Co. 57,960 Gozar Inc. 98,560 Nightline Co. 39,200 For the year ending December 31, 2015, O'Brien...
-
Marketing and decision-making go hand in hand. Marketing campaigns are, in fact, created based on knowledge related to how humans behave, what they react to, what makes them happy, etc. Choosing the...
-
Proofread this and Rewrite in appropriate format. To: Employees of Small, Local manufacturing company Cc: Marilyn123@gmail.com BCC: Subject: Cancellation of summer picnic Hey everyone Hope you all...
-
The crime scene itself was located inside a bedroom. The entrance door, from the hallway into the bedroom was located on the north wall of the room. Also on the north wall of the room, located on...
-
Sometimes simply being exposed to more advanced moral reasoning is sufficient to promote developmental change (Walker, 1980). For example, adolescents may notice that older friends do not wait to be...
-
Ali offered to purchase Sams pool for $400 cash. Ali and sam agreed that sam would deliver the pool to Alis house on march 1, at which time Ali would pay the $400. On march 1, when sam did not...
-
What are the principal differences among asset liquidity management, liability management, and balanced liquidity management?
-
The database Spambase.xlsx** contains detailed in for mation on the words used in a large number of emails. The emails are classified as Spam or Not Spam. The goal is to create a Nave Bayes model to...
-
The Schutzberg Brewery has received an order for 1,500 gallons of 3-percent beer (that is, 3 percent alcoholic content). This is a custom order because Schutzberg does not produce a 3-percent...
-
A sudden increase in the demand for smoke detectors has left Acme Alarms with insufficient capacity to meet demand. The company has seen monthly demand from its retailers for its electronic and...
-
Using the online code for the example in this chapter as a starting point and the solution from a previous exercise. 1. Implement (or modify your previous) Student: :DropCourse (). When a student...
-
What other examples can you imagine that might easily incorporate the Factory Method pattern?
-
Using the solution from a previous exercise, augment your code as follows: 1. Implement the Factory Method pattern to create various shapes. You will have already created an abstract base class of...
Study smarter with the SolutionInn App