Question

The reaction between hydrogen and iodine, H2(g) + I2 (g) ⇋ 2HI(g) ΔH = +53 kJ/mol .is not affected by a change in pressure. Why is this?
A. There are equal numbers of molecules on both sides of the equation.
B. They are all in the gaseous state.
C. It is a catalysed reaction.
D. Because it is an endothermic reaction.

Answer 1

Answer:

ᴏɴᴄᴇ ᴇǫᴜɪʟɪʙʀɪᴜᴍ ɪs ᴇsᴛᴀʙʟɪsʜᴇᴅ, ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ ɪs ᴏᴠᴇʀ, ʀɪɢʜᴛ? ɴᴏᴛ ᴇxᴀᴄᴛʟʏ. ᴀɴ ᴇxᴘᴇʀɪᴍᴇɴᴛᴇʀ ʜᴀs sᴏᴍᴇ ᴀʙɪʟɪᴛʏ ᴛᴏ ᴀғғᴇᴄᴛ ᴛʜᴇ ᴇǫᴜɪʟɪʙʀɪᴜᴍ.

ᴄʜᴇᴍɪᴄᴀʟ ᴇǫᴜɪʟɪʙʀɪᴀ ᴄᴀɴ ʙᴇ sʜɪғᴛᴇᴅ ʙʏ ᴄʜᴀɴɢɪɴɢ ᴛʜᴇ ᴄᴏɴᴅɪᴛɪᴏɴs ᴛʜᴀᴛ ᴛʜᴇ sʏsᴛᴇᴍ ᴇxᴘᴇʀɪᴇɴᴄᴇs. ᴡᴇ sᴀʏ ᴛʜᴀᴛ ᴡᴇ “sᴛʀᴇss” ᴛʜᴇ ᴇǫᴜɪʟɪʙʀɪᴜᴍ. ᴡʜᴇɴ ᴡᴇ sᴛʀᴇss ᴛʜᴇ ᴇǫᴜɪʟɪʙʀɪᴜᴍ, ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ɪs ɴᴏ ʟᴏɴɢᴇʀ ᴀᴛ ᴇǫᴜɪʟɪʙʀɪᴜᴍ, ᴀɴᴅ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ sᴛᴀʀᴛs ᴛᴏ ᴍᴏᴠᴇ ʙᴀᴄᴋ ᴛᴏᴡᴀʀᴅ ᴇǫᴜɪʟɪʙʀɪᴜᴍ ɪɴ sᴜᴄʜ ᴀ ᴡᴀʏ ᴀs ᴛᴏ ᴅᴇᴄʀᴇᴀsᴇ ᴛʜᴇ sᴛʀᴇss. ᴛʜᴇ ғᴏʀᴍᴀʟ sᴛᴀᴛᴇᴍᴇɴᴛ ɪs ᴄᴀʟʟᴇᴅ ʟᴇ ᴄʜᴀᴛᴇʟɪᴇʀ’s ᴘʀɪɴᴄɪᴘʟᴇ: ɪғ ᴀɴ ᴇǫᴜɪʟɪʙʀɪᴜᴍ ɪs sᴛʀᴇssᴇᴅ, ᴛʜᴇɴ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ sʜɪғᴛs ᴛᴏ ʀᴇᴅᴜᴄᴇ ᴛʜᴇ sᴛʀᴇss.

Answer 2

Answer:

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