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mostly blue.
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∙ 11y ago
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What is cobalt chloride paper in simple terms?
Cobalt chloride paper is absorbent paper which has been soaked in cobalt chloride solution and allowed to dry. It is a convenient way to use cobalt chloride as a test for the presence of water. When cobalt chloride is anhydrous, that is completely without water, it is blue, but when there is water present, either in solution or in the solid, it is pink. To use cobalt chloride paper it is heated to drive off the water present, until it turns blue. You then dip it into the liquid you want to test. Water,or any liquid such as milk which contains water, will turn the paper pink (it may look white if there's not much cobalt chloride on it). Other liquids, e.g. gasoline, will have no effect.
Why does dry HCl gas does not change the colour of the dry litmus paper?
Hydrogen chloride gas is not an acid, is not in solution and does not donate protons. So, no litmus paper color change.
How do you know that there is watervapour in your breath?
A simple way would be to breathe into a mirror. Water vapour would condense on its surface and fog it up. The condensate can be confirmed as water by testing with dry cobalt chloride paper, which would turn from blue to pink.
Why do dry sodium chloride the solutions of sodium nitrate and sodium chloride all impart the same color of the flame?
The (yellow) sodium color is the same in all.
In the presence of water what happens to anhydrous cobalt chloride?
The colour become initially purple and after (with more humidity) pink.
What is cobalt chloride paper in simple terms?
Cobalt chloride paper is absorbent paper which has been soaked in cobalt chloride solution and allowed to dry. It is a convenient way to use cobalt chloride as a test for the presence of water. When cobalt chloride is anhydrous, that is completely without water, it is blue, but when there is water present, either in solution or in the solid, it is pink. To use cobalt chloride paper it is heated to drive off the water present, until it turns blue. You then dip it into the liquid you want to test. Water,or any liquid such as milk which contains water, will turn the paper pink (it may look white if there's not much cobalt chloride on it). Other liquids, e.g. gasoline, will have no effect.
Why does dry HCl gas does not change the colour of the dry litmus paper?
Hydrogen chloride gas is not an acid, is not in solution and does not donate protons. So, no litmus paper color change.
How do you test for H2o?
Testing with indicator paperstrip: Iodide-Starch gets blue
How do you know that there is watervapour in your breath?
A simple way would be to breathe into a mirror. Water vapour would condense on its surface and fog it up. The condensate can be confirmed as water by testing with dry cobalt chloride paper, which would turn from blue to pink.
Why do dry sodium chloride the solutions of sodium nitrate and sodium chloride all impart the same color of the flame?
The (yellow) sodium color is the same in all.
How can you test tap water?
There are a great number of tests that can be performed on water to asses its chemical compositions. Typically, metal analysis is perfomed by AAS, pH, conductivity, chemical oxygen demand. A more specific question would allow for a more detailed answer.
In the presence of water what happens to anhydrous cobalt chloride?
The colour become initially purple and after (with more humidity) pink.
Why a dry blue litmus paper is not affected by hydrogen chloride gas?
AS HCL DONATE ELECTRON IT HAS NO EFFECT ON DRY LITMUS PAPERType your answer here...
What is a desicator and how is it used?
Desiccators are sealable enclosures containing desiccants used for preserving moisture-sensitive items such as cobalt chloride paper for another use. A common use for desiccators is to protect chemicals which are hygroscopic or which react with water from humidity.
Why does dry sodium chloride and the solutions of sodium nitrate and sodium chloride impart the same colour to the flame?
The color (yellow) is due to the metal ion (sodium), the other element does not participate.
What is the effect of dry red litmus paper on household ammonia?
litmus color changes into blue.
Why do sodium chloride and sodium nitrateboth the dry crystals and aqueous solutions all impart the same color to the flame?
white/gray
