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Mercuric bromide or Mercuric Chloride impregnated paper react with Arsin gases, ans form a yellow stain. this is an indication of the presence of Arsenic in the sample being analysed.

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Q: Why mercuric chloride paper is used in limit test for arsenic?
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Why zinc and potssium iodide are using in arsenic limit test?

Potassium iodide reduced any arsenic(V) to arsenic(III) The zinc reacts with the arsenic(III) to form arsin, this evolves as a gas and stains the mercuric bromide paper


What color will a cobalt chloride paper turn into when there is water vapor?

The colour of cobalt chloride paper is BLUE when NO WATER is present.When WATER is present it is PINK.


What is detected when cobalt chloride paper turns pink?

When cobalt II chloride paper turns pink, this means that it has detected water. :-)


What color does sodium chloride give on litmus paper?

Sodium chloride solution is neutral.


Is cobalt chloride paper the same thing as pH paper?

No. Cobalt chloride paper is used for testing the appearance of wate. Whilst pH paper is used for testing the pH value of a particular chemical/solution.


What colour does litmus paper turn in sodium chloride acid?

- sodium chloride is not an acid - in an acid solution the blue litmus paper become red


What would turn cobalt chloride paper yellow?

If cobalt chloride paper turns yellow, that just means it your salt contains a transition metal.


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 cobalt chloride paper change from blue to pink when it is placed on a leaf or a plant?

exhaled air contains water vapour, when water comes in contact with cobalt chloride paper, the blue paper turns pink.


Can sodium chloride bleach paper?

Not directly; sodium chlorate/sodium chlorite are used, derived from sodium chloride.


What is the age limit for a paperboy job?

I think the paper route age limit is 10 and above.


What would happen if you breathe out on cobalt chloride paper?

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