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Why does Wijs solution need to be stored in the dark for 30minutes?
Wiki User
∙ 14y ago
because sunlight can affect its stability
Wiki User
∙ 14y ago
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Why do sample should be keep in dark place for 30minutes in determination of iodine value?
to avoid the light go through in the sample and keep the sample cool also.
Can't H2O2 be stored for long periods?
The typical 3% solution that you use for wound disinfection can be stored for about a year. If it is stored much longer, it will have lost its potency because it will have decomposed to water and oxygen. It can be stored longer if kept in cool and dark storage conditions. If the solution is allowed to become contaminated it may decompose much quicker. Take a small amount (tablespoon or so) of the questionable material and drop a crumb of baking yeast into it. No fizz, no good.
What is the appearance when you mixed the coffee powder and water?
It is a dark solution.
What is the Appearance of coffee powder and mixed on water?
It is a dark solution.
Why ether are stored in dark brown bottles?
This is to avoid exposition to light and to minimize the formation of peroxides
How is thyme stored?
it is stored in a cool dark place
Why is silver nitrate solution unstable?
Well, AgNo3(silver nitrate) can only be stable if stored under dark condition i.e in a dark or amber bottle on the other hand if exposed, it reacts readily with light
Why do sample should be keep in dark place for 30minutes in determination of iodine value?
to avoid the light go through in the sample and keep the sample cool also.
Can't H2O2 be stored for long periods?
The typical 3% solution that you use for wound disinfection can be stored for about a year. If it is stored much longer, it will have lost its potency because it will have decomposed to water and oxygen. It can be stored longer if kept in cool and dark storage conditions. If the solution is allowed to become contaminated it may decompose much quicker. Take a small amount (tablespoon or so) of the questionable material and drop a crumb of baking yeast into it. No fizz, no good.
H2O2 is stored in ----------containers?
Probably "dark," to avoid photolysis.
Where should amaranth be stored?
Amaranth should be stored in a tightly sealed container in a cool, dry, dark location.
Why potassium ferrocyanide is stored in dark coloured bottles and kept away from sunlight?
Potassium ferrocynide is stored in dark coloured bottels and kept away from sunlight.This is because it decomposes when exposed to sunlight.Thus it is always stored in amber or brown coloured bottels.
What does iodine solution indicate?
Indicates that there is starch in the solution. One can be sure if the solution changes to a dark-purplish color.
Can be decomposed is?
Yes, especially when stored in a warm, dark, humid environment.
Is force can be decomposed?
Yes, especially when stored in a warm, dark, humid environment.
Where should you store Lentils?
They should be stored in a cool, dark and dry place.
What is the appearance when you mixed the coffee powder and water?
It is a dark solution.
