marisol56
16.10.2020 •
Social Studies
What’s the answer????
Solved
Show answers
More tips
- L Leisure and Entertainment When will Maslenitsa start?...
- F Food and Cooking Discovering the Mysterious Fruit of Feijoa...
- B Business and Finance How to Open an Online Store? A Detailed Guide for Beginners...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
Answers on questions: Social Studies
- S Social Studies Anne is a teenager attending junior high school in Washington, D.C. Anne attends a school where all her teachers have high expectations for student conduct. If Anne is...
- S Social Studies Diane was having lunch with her mother, and they were talking about a popular movie. They could not remember the name of the actor who starred in the movie, but Diane...
- S Social Studies According to the map above ,all of the following resources are found in south east asia hurry a.oil b.lumber c.natural gas d.precious gems...
- S Social Studies What is one aspect of a country that may be more important to its world standing than its size?...
- S Social Studies Harry and sally have had a long, loving, and stable relationship. we would expect that this couple...
- S Social Studies When we say that money can be used as a store of value, we mean a. it can be used to measure the worth of other things. b. buyers and sellers are both willing to accept...
- S Social Studies One of the major tenets of karl marx s work was that: a. peasants and artisans would combine with factory workers to lead the socialist revolution b. by increasing social...
- E English which description best expresses the narrators stance in the relation to her characters? A.sentimental engagement B.ironic detachment C.scornful mockery D.they are her...
- E English which two countries are doing the best at paying women equal pay for equal work? What mindeset shift and events in those countries have helped close the pay gap?...
- H History What is it called when Gibbons vocalize together?...
Ответ:
1. False, 2. Yes
Explanation:
Ответ:
The concentration of NH₄NO₃ required to make [OH⁻] = 1.0 × 10⁻⁵ in a 0.200-m solution of NH₃ is 0.3639 M
Explanation:
Here we have
The reaction of Ammonia and water to produce OH⁻
NH₃ + H₂O → NH₄⁺ + OH⁻
From Henderson-Hasselbalch Equation for bases we have
pOH = pKb + log[acid]/[base]
The concentration of OH⁻ is given as [OH⁻] = 1.0 × 10⁻⁵
Therefore pOH = -log [OH⁻] = -log(1.0 × 10⁻⁵) = 5
The base dissociation constant is given by
kb = [B⁺][OH⁻]/[BOH]
For NH₃, kb = 1.8×10⁻⁵
pKb = -log Kb = 4.74
From the Henderson-Hasselbalch Equation
The acid concentration = [NH₄⁺] and the base concentration = [NH₃] = 0.200 M
pOH = pKb + log ([acid]/[base])
Substituting the values, we have
5 = 4.74 + log ([ NH4+ ]/0.200 M)
[NH4+] = 1.8197×0.200 M = 0.3639 M
NH₄NO₃ → NH₄⁺ + NO₃⁻
Therefore, since one mole of NH₄NO₃, produces one mole of NH₄⁺, the number of moles of NH₄NO₃ required to produce 0.3639 M of NH₄⁺ is 0.3639 M of NH₄NO₃
The concentration of NH₄NO₃ required to make [OH⁻] = 1.0 × 10⁻⁵ in a 0.200-m solution of NH₃ = 0.3639 M