which one of the following is an endothermic process?1.ice melting 2.water freezing 3.a boiling soup 4.the reaction of HCl and NAOH,temperature increases
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For ice melting, it releases more energy than it absorbs. The reverse for water freezing.
Not sure for the boiling soup. For all neutralization, it is exothermic
how ice melting be exothermic..???
molecules are separate apart and energy releases, i think...
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but its melting process...it requires energy....if it releases energy then it will be spontaneous process....
for every reaction, it requires energy. To determine whether it is endothermic or exothermic, it depends on the energy released. If energy released is greater than the energy absorbed , it is exothermic, and vice versa
for example, for Haber process, you need energy for N2 and H2 to react, but after the reaction, N2 and H2 form a compound and releases more energy than it has absorbed. So Haber process is an exothermic reaction