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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.
How much heat does methanol give off?
When combusted, methanol releases about 22.7 megajoules of heat per liter of fuel burned.
What happens when you heat methanol in a microwave?
Heating methanol in a microwave can cause it to vaporize and potentially ignite, leading to a fire or explosion hazard. It is not safe to heat flammable liquids like methanol in a microwave as it can result in serious safety issues.
How many kilojoules are released when 81.4 g of methanol reacts?
To calculate the energy released when methanol reacts, you need the heat of combustion of methanol. The heat of combustion of methanol is around -726.1 kJ/mol. Calculate the number of moles of methanol in 81.4 g, then multiply by the heat of combustion to find the energy released.
Why is heat generated when methanol dissolves in water?
If heat is generated during a chemical process, this indicates that it is an exothermic reaction.
Why does butanol heat water more than methanol?
Butanol is has less polarity than methanol
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
What would you expect to happen if sodium methoxide were added to water?
When sodium methoxide is added to water, it will undergo hydrolysis, producing sodium hydroxide and methanol. This reaction releases heat and sodium hydroxide is a strong base that can cause skin and eye irritation. Extreme care should be taken when handling sodium methoxide as it is highly reactive.
Why a concentrated acid is added into water and not the reverse?
Concentrated acid is added to water to ensure safety and control during the dilution process. Adding water to concentrated acid can cause an exothermic reaction that generates heat, potentially leading to splattering or violent reactions. By adding acid to water, the heat generated is absorbed by the larger volume of water, minimizing the risk of accidents and ensuring a more controlled dilution.
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.
How much heat does methanol give off?
When combusted, methanol releases about 22.7 megajoules of heat per liter of fuel burned.
How do you remove water from catalytic converter?
Start the engine. The water will evaporate from the heat generated by the engine.
What is the product of methanol and oxygen?
The reaction between methanol and oxygen typically produces carbon dioxide and water vapor as products. This reaction is exothermic and can be used to produce heat energy or to generate electricity in fuel cells.
