/*! 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} Q21.7P Are spectator ions used to balan... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 21: Q21.7P (page 972)

Are spectator ions used to balance the half-reactions of a redox reaction? At what stage might spectator ions enter the balancing process?

Short Answer

Expert verified

When a reaction is broken down into half-reactions, spectator ions are removed and then added back when the half-reactions are added after individual balancing.

Step by step solution

01

what is half-reaction

A redox reaction's half reaction is either the oxidation or reduction reaction component. The change in oxidation states of specific chemicals participating in the redox reaction is used to calculate a half-reaction.

02

Determining at which stage spectator ions might enter the balancing process

When a redox reaction is broken down into two half-reactions, any spectator ions are eliminated from the equations.

When the two half-reactions are joined together, any spectator ions that were eliminated from the equation are also included.

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

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

Commercial electrolysis is performed on both moltenand aqueoussolutions. Identify the anode product, cathode product, species reduced, and species oxidized for the anode.

(a) molten electrolysis and

(b) aqueous electrolysis.

Consider the following balanced redox reaction:

2CrO2-(aq)+2H2O(l)+6ClO-(aq)鈫�2CrO42-(aq)+3Cl2(g)+4OH-(aq)

(a) Which species is being oxidized?

(b) Which species is being reduced?

(c) Which species is the oxidizing agent?

(d) Which species is the reducing agent?

(e) From which species to which does electron transfer occur?

(f) Write the balanced molecular equation, with the spectator ion.

During reconstruction of the Statue of Liberty, Te铿俹n spacers were placed between the iron skeleton and the copper plates that cover the statue. What purpose do these spacers serve?

Electrodes used in electrocardiography are disposable, and many incorporate silvers. The metal is deposited in a thin layer on a small plastic 鈥渂utton,鈥� and then some is converted to AgCl:

Ag(s) + Cl-(aq)鈬�AgCl(s) +e-

(a) If the surface area of the button is2.0 cm2and the thickness of the silver layer is7.5脳10-6m, calculate the volume (incm3) ofused in one electrode.

(b) The density of silver metal is 10.5 g/cm3. How many grams of silver are used per electrode?

(c) Ifis plated on the button from an Ag+solution with a current of12.0 mA, how many minutes does the plating take?

(d) If bulk silver costs$ 13.00per troy ounce (31.10 g), what is the cost (in cents) of the silver in one disposable electrode?
See all solutions

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Kinetics

Read Explanation

Nuclear Chemistry

Read Explanation

The Earths Atmosphere

Read Explanation

Making Measurements

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.