Endothermic reaction upon heating

[wajeeh]

Is there any endothermic reaction that takes place on heating ?

[ojread2]

you're supposed to do homework over the weekend not on the bus on a Monday morning

GIYF and a very good one at that

[factor-fiction]

Think about what ENDOTHERMIC and EXOTHERMIC mean , then think about the heating process. Then form an answer
This may help
http://m.everythingsc...eactions-04.cnxmlplus

[beso]

It is certainly possible for an endothermic reaction to require a threshold temperature to initiate the reaction.

The kinetic equivalent is that of a system with a raised bowl. Energy is required to kick the ball out of the bowl but the end result is a lower entropy.

I look forward to someone naming the reactions that happen near room temperature.

We should anticipate the issue of the assumed starting temperature. Almost nothing happens near Absolute Zero. A little heat can really make a difference in this chilly precinct.

[vetuste_ennemi]

<<If we accept the postulate given to me by Teresa Banyan during my Freshman year, "...that it will be a cold day in Hell before I sleep with you and take into account the fact that to this day I have not succeeded in having sexual relations with her..." >>

[factor-fiction]

This may be relevant
http://www.theanswerb.../Question1169084.html

[theprof]

OMG, I demonstrated some of this stuff when talking to a GCSE chemistry class my local comprehensive a couple of years ago ( why do teachers insist that visiting professors demonstrate wacky stuff?)

The obvious one that occurs at room temperature is the solid-solid reaction between hydrated barium hydroxide and ammonium chloride. Most often, the experiment takes the form of mixing the two compounds in a small beaker sitting on an evaporating dish containing a small quantity of water at around 20 degrees C. The experiment should be performed in a fume cupboard due to the fact that ammonia is liberated. The reaction is endothermic and the water will decrease in temperature to about -20 degrees C. the fun part is when the beaker is picked up and the evaporating dish is stuck to the bottom of the beaker! Ammonium thiocyanate and a few other more unusual ammonium salts can be substituted for the ammonium chloride.

The other simple endothermic reaction that occurs at room temperature is the addition of baking soda powder to half a polystyrene cup of lemon juice. A thermometer is mandatory for this experiment.

There are many other room temperature endothermic reactions that occur in chemical engineering and even in biochemistry, but the reacting compounds are more complex.

[theprof]

Remember that thermal decompositions are endothermic.

How would you produce anhydrous copper (ii) sulphate in a laboratory?

[factor-fiction]

It would be quite amusing after all that if the OP had actually meant 'eating'