▪ lose energy, releases warmth, temperature of the surroundings increases▪ entails bond development (for phase change: gas → liquid → solid)▪ ΔH isnegative

Endothermic reactions

▪ gain/calls for power, absorbs heat, temperature of the surroundings decreases▪ involves breaking bonds (for phase change: solid → liquid → gas)▪ ΔH ispositive

Examining procedure given:


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Which one of the adhering to procedures is endothermic?

a. 2 H2 (g) + O2(g) → 2 H2O (g)

b. H2O (g) → H 2O (l)

c. CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (g)

d. H2O (s) → H2O (l)

e. 2 Al (s) + Fe2O3 (s) → Al2O3 (s) + 2 Fe (s)


Q.Complete the adhering to sentences about endothermic and also exothermic transforms.Exothermic changes: the system _ the surroundings. The warm _____ by the sur...

You are watching: Which of the following is an endothermic process


Q.During an energy exadjust, a chemical device absorbs energy from its surroundings. What is the authorize of ΔEsys for this process? Explain.
Q.From a molecular viewpoint, where does the power took in in an endothermic chemical reaction go?

What scientific idea perform you have to know in order to resolve this problem?

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