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When ethanol is added to alkaline KMno4 solution, the ethanol gets oxidised to ethanoic acid due to nascent oxygen. KMno4 is an oxidising agent. thus when we first add alkaline Kmno4 to ethanol, the pink colour of the Kmno4 vanishes, as it is being used up for the oxidation process. however. when all of the ethanol has been oxidised into ethanoic acid, and we keep adding Kmno4, the colour returns, as there is no more ethanol left to oxidise.
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How do you separate ethanol from aqueous ethanol?
Ethanol can be separated from aqueous ethanol through a process called distillation. In distillation, the mixture is heated to evaporate the ethanol, which is then condensed back into liquid form. The condensed ethanol can then be collected as a separate product.
What does the leaf look like after it had been heated with ethanol?
After being heated with ethanol, the leaf may appear wilted or discolored due to the ethanol extracting the pigments from the leaf. The leaf may also become brittle or fragile as a result of the heat and the alcohol treatment.
What happens when ethanol is heated in presence of concentrated H2SO4?
When ethanol is heated in the presence of concentrated H2SO4, it undergoes dehydration to form ethylene gas. This reaction follows an elimination mechanism where a water molecule is eliminated from ethanol to produce ethylene.
What does a leaf look like after being heated by ethanol?
When a leaf is heated by ethanol, it may become wilted, dried out, discolored, or charred depending on the temperature and duration of heating. The heat from the ethanol can cause the leaf's water content to evaporate, leading to changes in its appearance and texture.
What happen when ethanol is heated with bleaching powder and water?
When ethanol is heated with bleaching powder (calcium hypochlorite) and water, it can undergo oxidation to form acetaldehyde. The bleaching powder provides the chlorine necessary for this oxidation reaction to occur. This reaction is typically used in organic chemistry for the transformation of alcohols into aldehydes or ketones.
What would happen if an aqueous solution of sugar is heated to dryness?
Crystals of sugar are obtained.
How to produce gelatin hydrolysate?
Hydrolysis is the decomposition of materials in water and usually involves strong acid or alkaline pH. In the case of gelatin (which is a protein) it is hydrolysed in alkaline solution with heat, so something like a few grams per litre of caustic soda will make a solution which decomposes gelatin when heated. The solution of decomposed gelatin is referred to as gelatin hydrolysate.
How do you separate ethanol from aqueous ethanol?
Ethanol can be separated from aqueous ethanol through a process called distillation. In distillation, the mixture is heated to evaporate the ethanol, which is then condensed back into liquid form. The condensed ethanol can then be collected as a separate product.
Does it take longer to saturate a heated solution than a cold solution?
No, a heated solution will saturate faster.
Which liquid expands more Ethanol or Water?
Ethanol expands more than water when heated because it has a higher coefficient of thermal expansion. This means that ethanol will increase in volume more than water when heated to the same temperature.
What does the leaf look like after it had been heated with ethanol?
After being heated with ethanol, the leaf may appear wilted or discolored due to the ethanol extracting the pigments from the leaf. The leaf may also become brittle or fragile as a result of the heat and the alcohol treatment.
What happens when ethanol is heated in presence of concentrated H2SO4?
When ethanol is heated in the presence of concentrated H2SO4, it undergoes dehydration to form ethylene gas. This reaction follows an elimination mechanism where a water molecule is eliminated from ethanol to produce ethylene.
What does a leaf look like after being heated by ethanol?
When a leaf is heated by ethanol, it may become wilted, dried out, discolored, or charred depending on the temperature and duration of heating. The heat from the ethanol can cause the leaf's water content to evaporate, leading to changes in its appearance and texture.
What happen when ethanol is heated with bleaching powder and water?
When ethanol is heated with bleaching powder (calcium hypochlorite) and water, it can undergo oxidation to form acetaldehyde. The bleaching powder provides the chlorine necessary for this oxidation reaction to occur. This reaction is typically used in organic chemistry for the transformation of alcohols into aldehydes or ketones.
Why the ethanol heated in a water bath instead of being heated directly?
Ethanol is heated in a water bath to provide a more uniform and controlled heating process, reducing the risk of overheating or boiling over. This method helps regulate the temperature and prevents direct contact of the ethanol with a high heat source, thus minimizing the risk of fire or explosion.
What will happen if a solution of sodium hydrogen carbonate heated?
When a solution of sodium hydrogen carbonate is heated, it will decompose to form sodium carbonate, water, and carbon dioxide gas. This decomposition reaction is characterized by effervescence due to the release of the carbon dioxide gas.
How do you get Ethanol from aqueous ethanol?
Ethanol can be recovered from aqueous ethanol through a process called distillation. A distillation column is used to separate the ethanol from water based on their boiling points. The mixture is heated, and the ethanol vaporizes at a lower temperature than water, allowing it to be collected and condensed back into liquid form.
