Question

Which equation represents sublimation?

1)
`Hg_((l))\to Hg_((s))`
2)
`NH_(3(g))\to NH_(3(l))`
3) 
`H_2O_((s)) \to H_2O_((g))`
4) 


`CH_(4(l)) \to CH_(4(g))`

Can someone help me with this one ?

Answer 1

Third one because sublimation is changing from solid to gas

Answer 2

Answer is 3) - H₂O(s) → H₂O(g)

Sublimation can be defined as the type of phase conversion of a substance which is in its solid phase to a gaseous phase without going through its liquid phase.

According to the given choices only third one is correct because solid H₂O goes to its vapor without going liquid state.