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Do self heating cans warm up their contents using an exothermic or endothermic reaction?
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∙ 12y ago
endothermic
Wiki User
∙ 12y ago
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When do you heat in organic chemistry?
Heating is believe to increase the rate of reaction, this depends on the type of reaction (if it is exothermic or endothermic). different reactions are heated at different times, some are as soon as the reagents are mixed while other are before preheated before mixing. If heating is required, then it has to be below boiling point of the solvent and reactant (unless you want to isolate a low boiling compound)
Which process is an example of an exothermic reaction?
Hf, reactants > Hf, products
What happens to the reaction 2 N O 2 in equilibrium with N 2 O 4 plus 57.3 kilojoules when the temperature of the reaction is increased?
This is an endothermic equilibrium reaction Thus, increase temperature will push the reaction to the right. So more N2O4 is produced
What happens to the mixture of iron fillings and sulphur powder after heating?
That produces a strongly exothermic reaction that results in the production of a grey substance, an iron sulphide. Please see the link.
Energy can be taken in only during a chemical reaction?
No, chemical reactions are not the only reactions that may involve absorption of energy. A physical change like heating water to vapor is also endothermic.
Could heat increase the rate of reaction?
if reaction is exothermic then on heating rate of reaction wil be low,and if reaction is endothermic then rate of reaction wil be high on heating
Does heating calcium carbonate produce an endothermic or exothermic reaction?
its an endothermic reaction, because the it broke the bonds of the calcium carbonate (CaCO3) in order to make calcium oxide (CaO) and Carbon dioxide (CO2).
What happens during an exothermic reaction?
Exothermic reaction is a reaction which gives out heat. For example: when natural gas burns it release its energy to the surroundings which could be the water in a central heating system. this is a EXOTHERMIC REACTION between natural gas and oxygen.
Is Na2CO3 H2O endothermic or exotermic reaction?
If formed out of elements C + O2 it is exothermic (heat, fire); But as degradation of complex compounds it depends on the compound used and other product formed, but a lot of degradations are endothermic (needs high temperatures and stops after heating is stopt, it cools 'itself' down)
What are the advantages and disadvantages of exothermic and endothermic reactions?
The big advantage to being exothermic is that the animals save a huge amount of energy. In contrast, endothermal or warm blooded animals use roughly one third of the energy they ingest for heating. The big disadvantage in being exothermic is that moving, digesting and reproducing generaly use more energy and take longer to start up.
The heat energy content of the reactants of an endothermic reaction compared with products is?
In an exothermic reaction the reactants release energy to the environment when they react - like coal burning. In an endothermic reaction the reactants need to absorb energy from their environment when they react, so the reaction feels cold in your hand, or else you have to heat it continually to make it react. The products would then be at a higher energy level than the reactant were. Photosynthesis is an interesting example of an endothermic reaction, because in this example the energy supplied to make the reaction go is not heat but light. The product (sugar) is an 'energy store' which the plant (or whatever eats the plant) can use later on to release the energy in respiration.
How heating and mixing increase the solubility?
An endothermic reaction is what increases solubility. When something is heated, and then continues moving (being mixed) it creates a better environment for an endothermic reaction.
What is a reversible chemical reaction for the heating of hydrated copper sulphate?
Pouring water on it because when it is heated it turns to an endothermic reaction and the hydrated part is boiled put of the compound it is then Anhydrous copper sulphate. When you add water it is hydrated again and this is an exothermic reaction. Which can get extremely hot so don't pour it on your hand and then hydrate it.
What the distinguish between exothermic and endothermic?
Endothermic reactions are reactions that create bonds between atoms, which means they require energy, so they take heat energy from its surroundings to create the bonds (meaning the reaction produces "cold"), and exothermic reactions are ones which break bonds between atoms, giving off energy and thus heat.
Which exothermic can be used to heat up a coffee can?
The chemicals calcium and lithium mixed with carbon make a good exothermic reaction to heat a self-heating can
When do you heat in organic chemistry?
Heating is believe to increase the rate of reaction, this depends on the type of reaction (if it is exothermic or endothermic). different reactions are heated at different times, some are as soon as the reagents are mixed while other are before preheated before mixing. If heating is required, then it has to be below boiling point of the solvent and reactant (unless you want to isolate a low boiling compound)
What is the difference between endothesmic and exothesmic change?
I'd think the question is meant to be about: endotheRmic and exotheRmic.The word endothermic ("within-heating") describes a process or reaction in which the system absorbs energy from the surroundings in the form of heat.The term exothermic ("outside heating") describes a process or reaction that releases energy from the system, usually in the form of heat.Energy involved can also be in the form of light (e.g. a spark, flame, or explosion), electricity (e.g. a battery), or sound (e.g. burning hydrogen).
