Predict boiling point

Chemistry Level 2

Predict the order relation of the normal boiling points of the following substances: F X 2 \ce{F2} , H C l \ce{HCl} , N H X 4 C l \ce{NH4Cl} and H F . \ce{HF}.

HCl < HF < F 2 < NH 4 Cl \text{HCl} < \text{HF}<\text{F}_{2} < \text{NH}_{4}\text{Cl} F 2 < HF < HCl < NH 4 Cl \text{F}_{2}<\text{HF}< \text{HCl}< \text{NH}_{4}\text{Cl} F 2 < HCl < NH 4 Cl < HF \text{F}_{2}< \text{HCl}< \text{NH}_{4}\text{Cl} < \text{HF} F 2 < HCl < HF < NH 4 Cl \text{F}_{2}< \text{HCl} < \text{HF}< \text{NH}_{4}\text{Cl}

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Krishna Singh by Krishna Singh , 22, India

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1 solution

Lu Chee Ket
Feb 16, 2016

Cunning to confuse between N H 3 NH_3 and N H 4 C l . NH_4Cl.

Rough figures of boiling points:

N H 4 C l : NH_4Cl: 520 ∘ C ^\circ C

H F : HF: 19.5 ∘ C ^\circ C

N H 3 : NH_3: -33 ∘ C ^\circ C

H C l : HCl: -85 ∘ C ^\circ C

F 2 : F_2: -188 ∘ C ^\circ C

Answer: F 2 < H C l < H F < N H 4 C l \boxed{F_2 < HCl < HF < NH_4Cl}

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