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Which phase change is endothermic? A) H₂O(t)→ H₂O(g) B) I2(g) → I2(s) C) Hg(t)→ Hg(s) D) H₂S(g) → H₂S(t)
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3 votes
Which phase change is endothermic?

A) H₂O(t)→ H₂O(g)
B) I2(g) → I2(s)
C) Hg(t)→ Hg(s)
D) H₂S(g) → H₂S(t)

User Nasreen
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1 Answer

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A is endothermic because H2O(l) is gaining heat and turning into gas.
The other three are exothermic because they are losing heat.
User Julien Boulay
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