Ques – 2 From given four test tubes a. b. c and d, nail manufacturing company is testing the corrosion in different environment given to nail. Tell the sequence of the test tubes from low corrosion speed to higher corrosion speed. Justify your answer with reasons. Layer of oil Boiled water Тар Water Boiled water Iron nail Iron nail

Ques – 2 From given four test tubes a. b. c and d, nail manufacturing company is testing the corrosion in different environment given to nail. Tell the sequence of the test tubes from low corrosion speed to higher corrosion speed. Justify your answer with reasons. Layer of oil Boiled water Тар Water Boiled water Iron nail Iron nail

Chemistry for Engineering Students

3rd Edition

ISBN:9781285199023

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter13: Electrochemistry

Section: Chapter Questions

Problem 13.36PAE

See similar textbooks

Similar questions

If a logarithmic scale had not been used for the graph of Figure 13.13, what would the plots look like? FIGURE 13.13 The variation of equilibrium constant with cell potential is shown. The different lines correspond to reactions involving the transfer of one, two, or three electrons, as indicated.
How does galvanic corrosion differ from uniform corrosion of iron?
A metallurgist wants to gold-plate an object with a surface area of 17.21 in2. The gold plating must be 0.00200 in. thick (assume uniform thickness). (a) How many grams of gold (d=10.5g/cm3) are required? (b) How many minutes will it take to plate the object from a solution of AuCN using a current of 7.00 A? Assume 100% efficiency.
An aqueous solution of an unknown salt of vanadium is electrolyzed by a current of 2.50 amps for 1.90 hours. The electroplating is carried out with an efficiency of 95.0%, resulting in a deposit of 2.850 g of vanadium. a How many faradays are required to deposit the vanadium? b What is the charge on the vanadium ions (based on your calculations)?
A magnesium bar with a mass of 6.0 kg is attached to a buried iron pipe to serve as a sacrificial anode. An average current of 0.020 A flows between the bar and the pipe. (a) What reaction takes place at the surface of the magnesium bar? (b) What reaction takes place at the surface of the iron pipe? (C) In which direction do electrons flow between the two surfaces? (d) How many years would it take for the entire magnesium bar to be consumed?
We noted that a tin-plated steel can corrodes more quickly than an unplated steel can. In cases of galvanic corrosion, one cannot expect standard conditions. Suppose that you want to study the galvanic corrosion of tin-plated steel by constructing a cell with low concentrations of the ions. You have pieces of tin and iron. You also have a solution of tin(ll) chloride that is 0.05 M and one of iron(ll) nitrate that is 0.01 M. (a) Describe the half-reactions you construct for this experiment. (b) Which halfreaction will be the anode and which the cathode? (c) Based on the solutions you have, calculate the cell potential for your experiment.