/*! 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} Problem 68 Selenium, an element required nu... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 2: Problem 68

Selenium, an element required nutritionally in trace quantities, forms compounds analogous to sulfur. Name the following ions: (a) \(\operatorname{SeO}_{4}^{2-},(\mathbf{b}) \mathrm{Se}^{2-},(\mathbf{c}) \mathrm{HSe}^{-},(\mathbf{d}) \mathrm{HSeO}_{3}^{-}\)

Short Answer

Expert verified
The names of the given ions are: (a) selenate, (b) selenide, (c) biselenide, and (d) biselenite.

Step by step solution

01

Determine the oxidation state of selenium in each ion

Before naming the ions, we need to figure out the oxidation state of selenium in each ion. (a) \(\operatorname{SeO}_{4}^{2-}\): Since the charge of each oxygen is -2, selenium has an oxidation state of +6. (b) \(\mathrm{Se}^{2-}\): The ion itself shows selenium has a -2 oxidation state. (c) \(\mathrm{HSe}^-\): Since each hydrogen has a +1 charge, selenium has an oxidation state of -1. (d) \(\mathrm{HSeO}_{3}^-\): Each oxygen has a charge of -2 and each hydrogen has a charge of +1. Therefore, selenium has an oxidation state of +4.
02

Name the ions based on the analogous sulfur ions

Now that we know the oxidation states of selenium in each ion, we can compare them to the corresponding sulfur ions: (a) \(\operatorname{SeO}_{4}^{2-}\): Analogous to the sulfate ion \(\mathrm{SO}_{4}^{2-}\), this ion is called selenate. (b) \(\mathrm{Se}^{2-}\): Analogous to the sulfide ion \(\mathrm{S}^{2-}\), this ion is called selenide. (c) \(\mathrm{HSe}^-\): Analogous to the bisulfide ion \(\mathrm{HS}^-\), this ion is called biselenide. (d) \(\mathrm{HSeO}_{3}^-\): Analogous to the bisulfite ion \(\mathrm{HSO}_{3}^-\), this ion is called biselenite. Thus, the names of the given ions are: (a) selenate, (b) selenide, (c) biselenide, and (d) biselenite.

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!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Naming Ions
is used to name them. This process has parallels in naming selenium compounds, where the corresponding selenium ions are named by the oxidation state of selenium and the presence of other elements like oxygen or hydrogen.
Selenium Compounds
), respectively. These compounds are found in various environmental and biological systems, playing roles in electronics, glass manufacturing, and as dietary supplements, given selenium's essential trace element status for various organisms.
Analogous Sulfur Ions
). Understanding these analogies helps in predicting the properties, reactions, and nomenclature of selenium compounds in chemistry.

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

There are two different isotopes of bromine atoms. Under normal conditions, elemental bromine consists of Br_{2} \text molecules, and the mass of a Br \(_{2}\) molecule is the sum of the masses of the two atoms in the molecule. The mass spectrum of Br_{2} consists of three peaks:(a) What is the origin of each peak (of what isotopes does each consist)? (b) What is the mass of each isotope? (c) Determine the average molecular mass of a Br_ molecule. (d) Determine the average atomic mass of a bromine atom. (e) Calculate the abundances of the two isotopes.

(a) Define atomic number and mass number. (b) Which of these can vary without changing the identity of the element?

Elements in the same group of the periodic table often form oxyanions with the same general formula. The anions are also named in a similar fashion. Based on these observations,suggest a chemical formula or name, as appropriate, for each of the following ions:\((\mathbf{a}) \mathrm{BrO}_{4}^{-},(\mathbf{b}) \mathrm{SeO}_{3}^{2-}\) \((\mathbf{c})\) arsenate ion, \((\mathbf{d})\) hydrogen tellurate ion.

What fraction of the \(\alpha\) particles in Rutherford's gold foil experiment are scattered at large angles? Assume the gold foil is two layers thick, as shown in Figure \(2.9,\) and that the approximate diameters of a gold atom and its nucleus are 2.7 A and \(1.0 \times 10^{-4} \hat{\mathrm{A}}\) , respectively. Hint: Calculate the cross sectional area occupied by the nucleus as a fraction of that occupied by the atom. Assume that the gold nuclei in each layer are offset from each other.

The structural formulas of the compounds \(n\) -butane and isobutane are shown below.(a) Determine the molecular formula of each.(b) Determine the empirical formula of each. (c) Which formulas - empirical, molecular, or structural- allow you determine these are different compounds?
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Read Explanation

Organic Chemistry

Read Explanation

Chemistry Branches

Read Explanation

Nuclear Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Kinetics

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.