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What does universal indicator contain?
Water, propan-1-ol, phenolphthalein sodium salt, sodium hydroxide, methyl red, bromothymol blue monosodium salt, thymol blue monosodium salt.
What is the purpose of the NaNO2 when preparing the Pauly reagent?
In the presence of sodium nitrite and hydrochloric acid, sulfanilc acid form a diazonium salt. This salt react with and is an indicator for thyrosine, histidine.
What reaction does the enzyme involved in Mannitol-salt agar test mediate?
Mannitol salt agar is selective for gram positive bacteria, and differential for mannitol fermenters. Phenol red is the indicator containing the enzyme mannitol.
What is the specific name of universal indicator?
A Universal indicator is a pH indicator composed of a solution of several compounds that exhibits several smooth colour changes over a pH value range from 1-14 to indicate the acidity or basicity of solutions. A universal indicator is typically composed of water, propan-1-ol, phenolphthalein sodium salt, sodium hydroxide, methyl red, bromothymol blue monosodium salt, and thymol blue monosodium salt.
What is the appearance of salt solution?
Generally the appearance is that of a dusty substance, the colour changes depending on the acidity of the solution when it was in its liquid form and if an indicator was used, usually it is white and dusty. :)
Which indicator is used while titrating mohrs salt against potassium dichromate using internal indicator analysis?
ferroin indicator
What is use of indicator?
Indicator is a process which is used to find out the substanceis acid,base and salt. example: litmus paper and termuric both are natural indicator. example of artificial indicator: mithyl orange and phenolphtaceil
What colour uvirsal indicator go if added to soudium chloride?
Sodium Chloride a.k.a. table salt or sea salt is neutral and so Universal Indicator will go Green with a Ph 7
The name of the plant which universal indicator is made of?
From wikipedia: A universal indicator is typically composed of water, methanol, propan-1-ol, phenolphthalein sodium salt, methyl red, bromothymol blue monosodium salt, and thymol blue monosodium salt
What colour does universal indicator go if salt solution is added?
red
What does universal indicator contain?
Water, propan-1-ol, phenolphthalein sodium salt, sodium hydroxide, methyl red, bromothymol blue monosodium salt, thymol blue monosodium salt.
Why the indicator is not used when V ml of acid is added to potassium hydroxide to produce crystal?
When acid is added to base, salts are formed as crystals. If indicator is added, then the indicator may also crystallize which acts as an impurity when compared to the crystals of the salt.
What is the purpose of the NaNO2 when preparing the Pauly reagent?
In the presence of sodium nitrite and hydrochloric acid, sulfanilc acid form a diazonium salt. This salt react with and is an indicator for thyrosine, histidine.
What mean salt?
If you have a salt-water pool and you have an indicator that says add salt it means that the amount of salt in the pool is not enough for the chlorinator to manufacture chlorine. Take a sample of water to your pool shop and they will help you with what is required. Or get a couple of bags of salt and add salt until the salt warning stops. The latter is a bit of a dodgy way of going about it.
What colour does universal indicator turn in ammonia solution?
ammonium hydroxide is a basic or alkaline salt & phenolphthelin gives pink colour in basic medium because it is a basic indicator
What happens when you mix cabbage juice and salt?
You will have made a pH indicator. Just like litmus paper.
What reaction does the enzyme involved in Mannitol-salt agar test mediate?
Mannitol salt agar is selective for gram positive bacteria, and differential for mannitol fermenters. Phenol red is the indicator containing the enzyme mannitol.
