/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q21.87P In the electrolysis of molten Na... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 21: Q21.87P (page 976)

In the electrolysis of molten NaBr,

(a) What product forms at the anode?

(b) What product forms at the cathode?

Short Answer

Expert verified

(a) bromine

(b) sodium

Step by step solution

01

To find the product forms at the anode

NaBr鈫�Na++Br鈭�

(a) In electrolysis of molten salts, the anion turns into a free element. Anions form free elements in the anode. In molten NaBr,theanionisBr-.

2Br-鈫�2e-+Br2(g)

Hence ThisBr-turnsintoBr2(g)

02

To find the product forms at the cathode

(b) In electrolysis of molten salts, the cation turns into a free element. Cations form free elements in the cathode. In moltenNaBr,Na+isthecation.

2Na++2e-鈫�2Na(s)

Hence TheNa+ ions turn into sodium metal.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

After the 1930s, chromium replaced nickel for corrosion resistance and appearance on car bumpers and trim. How does chromium protect steel from corrosion?

What areE鈭�cell and鈻�G鈭� of a redox reaction at25鈭�Cfor whichn=2 andK=65?

Question: To examine the effect of ion removal on cell voltage, a chemist constructs two voltaic cells, each with a standard hydrogen electrode in one compartment. One cell also contains aPb/Pb2 +half-cell; the other contains a Cu/Cu2 +half-cell.

(a) What is Eoof each cell 298 K at?

(b) Which electrode in each cell is negative?

(c) When Na2Ssolution is added to the Pb2 +electrolyte, solid PbSforms. What happens to the cell voltage?

(d) When sufficient Na2Sis added to the Cu2 +electrolyte,CuSforms and [Cu2 +]drops to 1脳10-6. Find the cell voltage.

When a clean iron nail is placed in an aqueous solution of copper(II) sulfate, the nail becomes coated with a brownish black material.

(a) What is the material coating the iron?

(b) What are the oxidizing and reducing agents?

(c) Can this reaction be made into a voltaic cell?

(d) Write the balanced equation for the reaction.

(e) Calculate E掳cell for the process.

Define oxidation and reduction in terms of electron transfer and change in oxidation number.
See all solutions

Recommended explanations on Chemistry Textbooks

Inorganic Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Making Measurements

Read Explanation

The Earths Atmosphere

Read Explanation

Chemical Analysis

Read Explanation

Organic 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.