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Why is the thiosulphate solution stored in the dark?
The thiosulphate solution is stored in the dark to prevent it from reacting with light, which may cause the solution to decompose or lose its effectiveness. Light can catalyze the oxidation of thiosulphate, leading to a decrease in its concentration and affecting its accuracy as a reagent in chemical reactions.
How do you prepare dpph radical solution?
To prepare a DPPH radical solution, dissolve DPPH powder in a solvent like methanol or ethanol to a concentration of around 0.1-0.2 mM. Mix well until the solution is completely dissolved. The solution can be stored in the dark and at low temperature to protect it from light.
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 colour does universal indicator turn in a strong alkaline solution?
Universal indicator turns dark blue or purple in a strong alkaline solution.
What is the colour of of an iodine solution?
An iodine solution is typically dark brown or reddish-brown in color.
Why is the thiosulphate solution stored in the dark?
The thiosulphate solution is stored in the dark to prevent it from reacting with light, which may cause the solution to decompose or lose its effectiveness. Light can catalyze the oxidation of thiosulphate, leading to a decrease in its concentration and affecting its accuracy as a reagent in chemical reactions.
How is thyme stored?
it is stored in a cool dark place
How do you prepare iodine solution?
To prepare iodine solution, dissolve iodine crystals in a mixture of water and potassium iodide (KI). The ratio of iodine to KI will determine the concentration of the solution. The solution should be stored in a dark bottle to prevent degradation from light exposure.
Why bromine water is stored dark coloured glass bottles in laboratory?
Bromine water is stored in dark-colored glass bottles to protect it from light, which can cause photodegradation and reduce its effectiveness. Bromine is a highly reactive and volatile substance, and exposure to light can lead to the breakdown of its chemical properties. Additionally, dark glass helps to minimize evaporation and prevent contamination from external sources, ensuring the stability and longevity of the bromine solution.
How do you prepare dpph radical solution?
To prepare a DPPH radical solution, dissolve DPPH powder in a solvent like methanol or ethanol to a concentration of around 0.1-0.2 mM. Mix well until the solution is completely dissolved. The solution can be stored in the dark and at low temperature to protect it from light.
Why is silver nitrate solution unstable?
Silver nitrate solution is unstable because silver ions have a high affinity for ligands present in solution, leading to the formation of insoluble silver compounds. The formation of these insoluble compounds can lead to the precipitation of silver salts from solution, making it appear unstable.
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.
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 stability of methadone when made into an oral solution?
Methadone is stable when made into an oral solution if stored properly in a cool, dark place to prevent degradation. It is important to follow the manufacturer's instructions for storage and expiration date to ensure stability and efficacy.
When iodine solution is dropped onto plant cells why do dark blue spots appear?
The dark blue spots appear when iodine solution is dropped onto plant cells because iodine reacts with starch in the cells to form a blue-black complex. Starch, which is a polysaccharide made up of glucose units, is stored in plant cells as a source of energy. The dark blue color indicates the presence of starch in the cells.
Can be decomposed is?
Yes, especially when stored in a warm, dark, humid environment.
