Question

What is the difference between heat of reaction & heat of combustion?​

Answer 1

Answer:

ᴛʜᴇ ʜᴇᴀᴛ ᴏғ ᴄᴏᴍʙᴜsᴛɪᴏɴ (Δʜ∘ᴄ) ɪs ᴛʜᴇ ᴇɴᴇʀɢʏ ʀᴇʟᴇᴀsᴇᴅ ᴀs ʜᴇᴀᴛ ᴡʜᴇɴ ᴀ ᴄᴏᴍᴘᴏᴜɴᴅ ᴜɴᴅᴇʀɢᴏᴇs ᴄᴏᴍᴘʟᴇᴛᴇ ᴄᴏᴍʙᴜsᴛɪᴏɴ ᴡɪᴛʜ ᴏxʏɢᴇɴ ᴜɴᴅᴇʀ sᴛᴀɴᴅᴀʀᴅ ᴄᴏɴᴅɪᴛɪᴏɴs. ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ɪs ᴛʏᴘɪᴄᴀʟʟʏ ᴀ ʜʏᴅʀᴏᴄᴀʀʙᴏɴ ʀᴇᴀᴄᴛɪɴɢ ᴡɪᴛʜ ᴏxʏɢᴇɴ ᴛᴏ ғᴏʀᴍ ᴄᴀʀʙᴏɴ ᴅɪᴏxɪᴅᴇ, ᴡᴀᴛᴇʀ ᴀɴᴅ ʜᴇᴀᴛ.

Answer 2

Answer:

Heat of reaction and heat of combustion

The heat of combustion will always be negative since the reaction will be giving off heat as it breaks the chemical bonds. The heat of formation should always be positive since it will be taking in heat in order to produce the chemical bonds.