In a dry cell mno2 occurs in a semisolid electrolyte paste, Ask an Expert

Academics

In a dry cell, MnO2 occurs in a semisolid electrolyte paste and is reduced at the cathode. The MnO2 used in dry cells can itself be produced by an electrochemical process of which one half-reaction is shown below.

Mn2+(aq) + 2 H2O(l) MnO2(s) + 4 H+(aq) + 2 e -

If a current of 30.5 A is used, how many hours are needed to produce 1.15 kg of MnO2?

View complete question

Chemistry, Academics

Category:- Chemistry
Reference No.:- M91057424

Have any Question?Write your Review or question?

Related Questions in Chemistry

A chemistry lab experiment requires 674 grams of

A chemistry lab experiment requires 67.4 grams of silvernitrate. How many grams of a 15.5% by mass solution of silvernitrate should be used?

What is the mass of naoh present in grams given that a 100

What is the mass of NaOH present in grams, given that a 100. mL solution has a concentration of 0.125 M?

1 balanced equation for thenbspdouble-replacement

1. Balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of iron(II) chloride and sodium hydroxid ...

While heating your copper sulfur mixture the original

While heating your copper sulfur mixture the original crucible lid fell and was broken. You replace the lid with another one. You used the mass of the original lid in your calculations. However the mass of the second lid ...

You are required to read the following case study and

You are required to read the following case study and prepare a Project Feasibility Study and Timeline based on the information contained in the case study. Residential Duplex Development Project You own a real estate ...

How do the colors seen by the naked eye compare to the

How do the colors seen by the naked eye compare to the emission spectra emitted by the flame

Suppose 1000 ml of an aqueous solution containing an

Suppose 100.0 mL of an aqueous solution containing an unknown monoprotic acid (called HA) is titrated with 0.150 M KOH. The titration requires 47.82 mL of the potassium hydroxide to reach the equivalence point. What is t ...

A 35g copper cup contains 89g of drinking water the copper

A 35g copper cup contains 89g of drinking water. The copper cup is placed into a cooling device consisting of an insulated container which holds 85g of water equal in temperature to the drinking water. Ammonium chloride ...

A student finds that the mass of an object is 662 kg she is

A student finds that the mass of an object is 6.62 kg. She is told that her measurement has an error of 12.3%. What is the true mass (in kg) of the object?

A saturated solution of sroh2aq at 25 degrees celcius has

A saturated solution of Sr(OH)2(aq) at 25 degrees Celcius has measured a pH of 13.5. Estimate the solubility of Sr(OH)2(aq) in water at 25 degrees Celsius

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Chemistry Expert