You have new items in your feed. Click to view.
Question and answer
Q: 2. What is the purpose of using the cobalt glass in the identification of sodium and potassium?
A: An intense yellow flame confirms the presence of sodium ions. [ The presence of potassium ions is indicated by a pale violet flame which appears reddish-violet through cobalt glass. In a mixture that may contain Na and K salts, it could be difficult to see the pale violet flame of potassium through the intense yellow flame of sodium. For identification of potassium, it is necessary to view the
flame through an optical filter to eliminate as far as possible the colors due to sodium, calcium, and other interfering ions. ]
Expert answered|Tachek|Points 50|
Question
Asked 1/14/2013 6:29:49 AM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
25,742,451 questions answered
Popular Conversations
In “A Few Don’ts,” Pound encourages the use of __________instead of ...
Weegy: In A Few Don'ts, Pound encourages the use of The Concrete instead of the vagueness of abstractions. User: ...
5/22/2017 11:51:10 AM| 0 Answers
Giving human characteristics to objects or ideas is
Weegy: Giving human characteristics to objects or ideas is PERSONIFICATION.
5/19/2017 10:58:38 PM| 0 Answers
Motivation refers to forces that
Weegy: Motivation refers to forces that: energize, direct, and sustain a person's efforts.
5/19/2017 10:41:24 PM| 0 Answers
The pitcher does not have the responsibility of striking out players ...
Weegy: The pitcher does not have the responsibility of striking out players at bat. FALSE.
5/15/2017 8:53:53 PM| 0 Answers
Rape that involves multiple attackers, strangers, weapons, or a ...
Weegy: Rape that involves multiple attackers, strangers, weapons, or a physical beating is Aggravated Rape.
5/15/2017 7:06:49 PM| 0 Answers
Weegy Stuff
S
Points 26 [Total 26] Ratings 0 Comments 26 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 366] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
P
P
L
P
P
P
Points 7 [Total 1730] Ratings 0 Comments 7 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 467] Ratings 0 Comments 2 Invitations 0 Offline
S
Points 2 [Total 2] Ratings 0 Comments 2 Invitations 0 Offline
S
P
P
L
P
P
Points 1 [Total 1637] Ratings 0 Comments 1 Invitations 0 Offline
S
Points 1 [Total 2] Ratings 0 Comments 1 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.