Exothermic phenomenon: with generation of heat
Endothermic phenomenon: with absorption of heat
6CO2 + 6H2O --> C6H12O6 + 6O2 This is the reaction involved in photosynthesis
Chemical formula is representative for the chemical compositon of a compound. Chemical equation is representative (describe) for a chemical reaction.
2 H2O is the chemical formula of two molecules of water, not a reaction.
HgI is not a chemical reaction, it is the empirical formula for the compound Mercury (I) iodide, Hg2I2
no , is the chemical formula by benda Benjamen
Impossible to answer. Exothermic reaction is just one of the two possible chemical reactions: either exothermic or endothermic. (No difference but heat release)
Dichlorine heptoxide is the chemical compound with the formula Cl2O7. This chlorine oxide is the anhydride of perchloric acid. It is an endothermic unstable molecule, will completely split up in elements by exothermic reaction.
C6H12O6 + 6O2 --> 6H2O + 6CO2 This is an exothermic reaction (ie a reaction that produces energy)
impossible as it will bubble of a chemical reaction giving off an endothermic reaction
Yes, but this also depends on the chemical composition of the solvent and the conditions under which the dissolution occurs.
H2SO4 + Zn --> ZnSO4 + H2 It's an exothermic single-replacement reaction.
The reaction is exothermic; the standard enthalpy of formation for sodium chloride is -411,12 kJ/mol at 25 0C.
Well, The chemical reaction when calcium is placed with water is a fizzing. It fizzes and also "produces" heat. Not sure what the chemical formula would be called however. Calcium Hydroxide possibly
They tell you how many molecules of two or more compounds combine to form other molecules. The equation can, but will not always, tell you if the reaction requires heat or gives off heat (endothermic/exothermic), whether or not a catalyst is required.
This is the generic reaction where "M" could represent any of the alkali metals.2M + 2H2O --> 2MOH + H2This really does not help anybody... at all. I asked for the metal not the formula
the standard enthalpy change of vaporization DHov is the enthalpy change when one mole of a substance is transformed into a gas enthalpy change is the term we use to describe the energy exchange that occurs with the surroundings at a constant temperature and pressure so to work it out, use the formula DH = cmDT DH - the enthalpy change c - the specific heat capacity of butanol (kJ kg-1 °C-1) m - the mass of butanol heated (kg) DT - the change in temperature of the butanol (°C) so there is no general enthalpy change of butanol, it depends on the factors above. the specific heat capacity of butanol, the mass of butanol heated, and the change in temperature of the butanol should be given to you in order to work the enthalpy change of vaporization of butanol if there is a rise in temperature, the reaction is exothermic and if there is a drop in temperature the reaction is endothermic. exothermic reactions have a negative enthalpy change, and therefore endothermic reactions have a positive enthalpy change. hope it helped (:
The chemical formula (not reaction) of sucrose is C12H22O11.