Which of the following is most stable to heat?

Which of the following is most stable to heat?
A. HCl
B. HBr
C. HOCl
D. HI

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - A
The stability of halogen hydrides to thermal deomposition decreases in the order:
`HCI gt HBr gt HI` and this is due to progressive decreases in H-X bond energy. Hydrogen chloride shows little tendency to decompose into its constituent elements when heated , whereas hypochlorous acid (HOCI) decomposes in presence of sunlight.
`2HOCl to 2HCl +O_(2)`

4 views Answered 2023-02-05 15:29

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