Logout Open In App
Open In App
Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Chapter 21: Q21.74P (page 922)

What is the direction of electron flow with respect to the anode and the cathode in a battery? Explain.

Short Answer

Expert verified

The direction of electron flow is from anode to cathode

Step by step solution

01

What is a Battery?

When some voltaic cells are connected in series, it forms a battery. The voltaic cells are arranged in series so that the overall potential of the battery is the sum of the potential of the individual batteries.

02

Working of a battery

Since a battery is a collection of voltaic cell, the working principle of battery is similar to voltaic cell. Therefore a battery also has two electrodes- cathode and anode.

Oxidation occurs at anode. Thus the electrons liberated during oxidation flows through an external wire to the cathode where the electrons are accepted by the ion present in the solution to undergo reduction.

Thus in a battery, electrons flow from anode to cathode.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

In an electric power plant, personnel monitor theO2 content of boiler feed water to prevent corrosion of the boiler tubes. Why does Fe corrode faster in steam and hot water than in cold water?

Write the cell notation for the voltaic cell that incorporates each of the following redox reactions:

(a) Al(s) + Cr3 +(aq) n Al3 +(aq) + Cr(s)

(b) Cu2 +(aq) + SO2(g) + 2H2O(l) nCu(s) + SO42 -(aq) + 4H+(aq)

A thin circular-disk earring4.00 cmin diameter is plated with a coating of gold 0.25 mmthick from an localid="1663324101600" Au3 +bath.

(a) How many days does it take to deposit the gold on one side of one earring if the current is0.013 A(d of gold= 19.3 g/cm3)?

(b) How many days does it take to deposit the gold on both sides of the pair of earrings?

(c) If the price of gold is$ 320per troy ounce (31.10 g), what is the total cost of the gold plating?

To improve conductivity in the electroplating of automobile bumpers, a thin coating of copper separates the steel from a heavy coating of chromium.

  1. What mass of Cuis deposited on an automobile trim piece if plating continues for1.25 hat a current of5.0 A?
  2. If the area of the trim piece is50.0 cm2, what is the thickness of theCucoating (d ofCu = 8.95 g/cm3)?

Magnesium bars are connected electrically to underground iron pipes to serve as sacrificial anodes.

(a) Do electrons flow from the bar to the pipe or the reverse?

(b) A12kgMgbar is attached to an iron pipe, and it takes8.5 yrfor the Mgto be consumed. What is the average current flowing between the Mgand the Feduring this period?
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Read Explanation

Chemistry Branches

Read Explanation

Making Measurements

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Inorganic Chemistry

Read Explanation

Physical Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free