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Why is heat generated when water is added to methanol?
When water is added to methanol, heat is generated because the two substances undergo an exothermic reaction known as an enthalpy change. This reaction involves the breaking and making of bonds between the molecules, which releases energy in the form of heat.
Why does butanol heat water more than methanol?
Butanol is has less polarity than methanol
Is reaction of white copper sulphate with water exothermic or endothermic?
The reaction of white copper sulfate with water is exothermic because it releases heat as it dissolves in water. This heat is generated due to the breaking of bonds between the copper and sulfate ions in the solid compound.
If lye NaOH is placed in water the solution gets very hot. what kind of reaction is this?
This is an exothermic reaction, which releases heat energy as the lye (NaOH) dissolves in water. This heat is generated due to the interaction between the ions in the NaOH and the water molecules.
Why does calcium chloride heat water?
Calcium chloride heats water because it is exothermic, meaning it releases heat when it dissolves in water. This heat is generated due to the strong intermolecular forces between the calcium chloride ions and water molecules.
Can you cool methanol until it becomes a gas?
No. You would have to heat methanol until it became a gas. Same thing with water, and so forth.
When solid sodium hydroxide is added to water the solution gets hot is this endothermic or exothermic?
When solid sodium hydroxide is added to water, the process is exothermic because it releases heat. The heat is generated as the sodium hydroxide dissolves in water, and the surrounding environment experiences a temperature increase.
How do you use the standard enthalpies of formation to calculate the amount of heat released per kilogram of methanol?
Presumably we are talking combustion of methanol? Methanol burns to make water and carbon dioxide. The energy change from carbon, hydrogen and oxygen to carbon dioxide and water is the same if it is in one step, or via the intermediate step of making ethanol.
What is the best why of eliminating methanol from water?
at normal atmospheric pressure methanol boils at around 67 degrees (C) and water boils at 100 degrees .. so I guess the easiest way would be by simply evaporating the methanol at a temperature around 80 degrees .. be careful though and take all the ness. safety precautions .. methanol is VERY poisonous and flammable .. so better do it in gas cabin or in an open room with good ventilation .. oh and do not heat the mixture directly .. you should heat it in a water bath .. all the best
How much heat is released when 200 grams of sodium hydroxide dissolve in water?
When 200 grams of sodium hydroxide dissolves in water, approximately 42 kJ of heat is released. This process is exothermic, meaning it releases heat energy as the ionic compound dissolves.
Does salt melt in hot water?
Yes, salt dissolves in hot water. The heat will speed up the dissolution process, causing the salt crystals to break down and mix with the water molecules.
Is methanol burning a chemical change?
Yes, burning methanol is a chemical change because it involves a chemical reaction in which methanol reacts with oxygen to form carbon dioxide and water, releasing energy in the form of heat. This process is irreversible and results in the formation of new substances with different properties compared to the original methanol.
