Problem: During an energy exchange, a chemical system absorbs energy from its surroundings. What is the sign of ΔEsys for this process? Explain.

FREE Expert Solution

Recall that:

Exothermic reactions

▪ lose energy, releases heat, temperature of the surroundings increases
▪ involves bond formation (for phase change: gas → liquid → solid)
▪ ΔH is negative

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During an energy exchange, a chemical system absorbs energy from its surroundings. What is the sign of ΔEsys for this process? Explain.

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