Which is higher in an endothermic reaction:?
460906
DH reaction = DH products – DH reactants\n\nExample:  2A + B -- C\nDH = DH C – (2 DH A + DH B)\n\nIf DH is negative: exothermic reaction \nIf DH is positive: endothermic reaction
155966
yeah, it means the reaction reaches equilibrium faster
655774
exothermic is describes the release of energy\n\nendothermic describes the absorption of energy
971455
there are various factors which affects rate of reaction. like temperature,pressure and concentration of the reactants involved. and they all have different effects
611632
space shuttle burns hydrogen. imagine you're standing under it when it launches. endothermic or exothermic?\n\ncorrect reaction formula was already given.
196147
At higher temperatures, reactions proceed faster, so metablic activity increases.  Also, pressure and/or volume may increase.  At high enough temperatures, proteins will start to denature, but this usually doesn't happen with a fever.
444820
Spontaneous combustion, or roughly, any spontaneous reaction would occur if the reactants are;\n1) thermodynamically unstable\n2) kinetically unstable\n\n1) Thermodynamic stability:\nAll combustion reactions are exothermic. If you draw the energy profile for a combustion reaction, the reactants are at a higher energy state and the products are at a lower energy state, since heat energy is released. Thermodynamic stability has to do with the relative energy of the reactants or products. As stated above, the reactants are at a higher energy state and they tend to release energy when reacting, so the reactants are said to be thermodynamically unstable. This unstability would result in a spontaneous reaction.\n\n2) Kinetic stability:\nThis takes into account the activation energy of the reaction. According to the 'Collision Theory', reacting molecules must have sufficient kinetic energy while colliding in order to overcome the activation energy for the proceeding reaction. Considering the thermodynamically unstable reactants above, if the reacting molecules can collide with each other with enough internal energy that is greater than or equal to the activation energy, they would be able to reach the transition state and form products spontaneously, and hence be termed kinetically unstable. \n\nIt happens, however, that in some combustion reactions, the reactants are thermodynamically unstable and you expect them to react just like that, but they don't because they're kinetically stable (internal energy not enough to overcome activation energy), and so they need to be given more internal energy in the form of a spark, ignition, presence of light etc., in order for the reaction to proceed.
474830
Heat, availability of reactants, # of enzymes, other competing enzymes (if any).  These are a few.  Heat is one of the biggest as enzymes have specific temperatures at which they operate best.  At different temperatures they tend to slow or shut down completely.  Hope this helps.
177825
theoretically, at any temperature above absolute zero, a reaction can occur.  There are very few reactions that are likely to take place at that temperature, but none that are impossible.
873474
these are some factors that i can thought of:\n1) addition/ removal of reactants/products\n2)increase/decrease of pressure of enclosed system containing only gases\n3)increase/decrease of temperature of enclosed system(only for reaction having enthalpy change)
462388
A reaction which gives out heat is known as 'exothermic'.\n\nhttp://en.wikipedia.org/wiki/Exothermic\nhttp://en.wikipedia.org/wiki/Exothermic_reaction\n\nA reaction which seems to absorb heat is known as 'Endothermic'\n\nhttp://en.wikipedia.org/wiki/Endothermic\nhttp://en.wikipedia.org/wiki/Endothermic_reaction
239222
no, reaction times are too slow at that temperature.  (I'm just guessing, but I'm a chemist.  You should be able to look up reaction energies, try Beilstein.)
178651
Your question is not clear but I take it you want 2 know what happens when heat is applied to a chemical reaction. \n\nHeat increases kinetic energy in molecules. If you apply heat, bombardment of molecules increase and therefore the reaction is favoured. In terms of equilibrium in reversible reactions, the forward reaction is favoured.
440509
There are many types exothermic or endothermic reactions.\n\n Exothermic reactions.\n1.Combustion reactions.(Except combustion of Nitrogen.)\n2.Combination reaction of anions & cations.(Ex-OH- + H+)\n3.Reaction of metals with non-metals.\n4.Some(1st) Electron affinity reactions(Expect elements of S2,P6,d10;Nitrogen)\n\n Endothermic reactions\n1.All the ionization reactions.\n2.Bond breaking reactions.\n3.Breaking into anions,cations.\n4.All the Sublimation,Vapuorization,Atomization reaction.\n5.(1st)Electron affinity reactions of S2,P6,d10 elements;Nitrogen\n6.All the 2nd,3rd electron affinity reactions \n\nSo,(a) is a exothermic  reaction\nAnd,(b) is also exothermic reaction
1151400
simply put: the higher the concentration the faster the reaction rate. in equilibrium the higher concentration shifts the reaction t o the other side.
445447
1-chloropropane, because chlorine has a higher value of electronegativity.
435509
An Endo-Thermic reaction takes in heat and the Exo-thermic one gives off heat.\n\nExemples:\n\nExothermic processes         \nmaking ice cubes              \nrusting iron                  \n\nEndothermic processes \nmelting ice cubes \ncooking an egg