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# ?A particular form of cinnabar (HgS) adopts the zinc blende structure. The length of the unit cell edge is $$5.852 \AA$$. (a) Calculate the d

ISBN: 9780134414232 1274

## Solution for problem 12.61 Chapter 12

Chemistry: The Central Science | 14th Edition

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Problem 12.61

A particular form of cinnabar (HgS) adopts the zinc blende structure. The length of the unit cell edge is $$5.852 \AA$$.

(a) Calculate the density of HgS in this form.

(b) The mineral tiemannite (HgSe) also forms a solid phase with the zinc blende structure. The length of the unit cell edge in this mineral is $$6.085 \AA$$. What accounts for the larger unit cell length in tiemmanite?

(c) Which of the two substances has the higher density? How do you account for the difference in densities?

Text Transcription:

5.852 \AA

6.085 \AA

Step-by-Step Solution:

Step 1 of 5) Water ionizes to a slight degree, forming. The extent of this autoionization is expressed by the ion-product constant for water:. This relationship holds for both pure water and aqueous solutions. The Kw expression indicates that the product of 3H+4 and 3OH-4 is a constant. Thus, it decreases. Acidic solutions are those that contain more H+1aq2 than OH-1aq2, whereas basic solutions contain more OH-1aq2 than H+1aq2. When 3H+4 = 3OH-4, the solution is neutral. The concentration of H+1aq2 can be expressed in terms of the pH of a neutral solution is 7.00, whereas the pH of an acidic solution is below 7.00, and the pH of a basic solution is above 7.00. This p notation is also used to represent the negative logarithm of other small quantities, as in pOH and pKw. The pH of a solution can be measured using a pH meter, or it can be estimated using acid–base indicators.

Step 2 of 2

##### ISBN: 9780134414232

Since the solution to 12.61 from 12 chapter was answered, more than 222 students have viewed the full step-by-step answer. Chemistry: The Central Science was written by and is associated to the ISBN: 9780134414232. This textbook survival guide was created for the textbook: Chemistry: The Central Science, edition: 14. The full step-by-step solution to problem: 12.61 from chapter: 12 was answered by , our top Chemistry solution expert on 10/03/18, 06:29PM. The answer to “?A particular form of cinnabar (HgS) adopts the zinc blende structure. The length of the unit cell edge is $$5.852 \AA$$. (a) Calculate the density of HgS in this form. (b) The mineral tiemannite (HgSe) also forms a solid phase with the zinc blende structure. The length of the unit cell edge in this mineral is $$6.085 \AA$$. What accounts for the larger unit cell length in tiemmanite? (c) Which of the two substances has the higher density? How do you account for the difference in densities?Text Transcription:5.852 \AA6.085 \AA” is broken down into a number of easy to follow steps, and 90 words. This full solution covers the following key subjects: . This expansive textbook survival guide covers 29 chapters, and 2820 solutions.

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?A particular form of cinnabar (HgS) adopts the zinc blende structure. The length of the unit cell edge is $$5.852 \AA$$. (a) Calculate the d