Question

Amount of cooling water required for exothermic reaction calculations

Answer 1

hey

dude

here is your answer

To calculate the amount of heat released in a chemical reaction, use the equation Q = mc ΔT, where Q is the heat energy transferred (in joules), m is the mass of the liquid being heated (in grams), c is the specific heat capacity of the liquid (joule per gram degrees Celsius) and ΔT is the change in temperature.

hope it helps u

Answer 2

heya friend.....here's your answer ..

By calculating the enthalpy change in a chemical reaction, you can determine whether the reaction is endothermic or exothermic. Chemical reactions transform both matter and energy. Though chemical equations usually list only the matter components of a reaction, you can also consider heat energy as a reactant or product. When chemists are interested in heat flow during a reaction (and when the reaction is run at constant pressure), they may list an enthalpy change

enthalpy change
to the right of the reaction equation. At constant pressure, heat flow equals enthalpy change:

Heat flow equals enthalpy change
If the enthalpy change listed for a reaction is negative, then that reaction releases heat as it proceeds — the reaction is exothermic (exo- = out). If the enthalpy change listed for the reaction is positive, then that reaction absorbs heat as it proceeds — the reaction is endothermic (endo- = in). In other words, exothermic reactions release heat as a product, and endothermic reactions consume heat as a reactant.

Some chemical reactions release energy by heat. In other words, they transfer heat to their surroundings. These are known as exothermic reactions -- "exo" means releases and "thermic" means heat. Some examples of exothermic reactions include combustion (burning), oxidation reactions like burning and neutralization reactions between acids and alkalis. Many everyday items like hand warmers and self-heating cans for coffee and other hot beverages undergo exothermic reactions.