Question

why are decomposition reaction called the opposite of combination reaction? write equation for these reactions​

Answer 1

Answer:

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❥︎ ᴅᴇᴄᴏᴍᴘᴏsɪᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴs ᴀʀᴇ ᴄᴀʟʟᴇᴅ ᴛʜᴇ ᴏᴘᴘᴏsɪᴛᴇ ᴏғ ᴄᴏᴍʙɪɴᴀᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴs ʙᴇᴄᴀᴜsᴇ ɪɴ ᴄᴏᴍʙɪɴᴀᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴs ᴛᴡᴏ ᴏʀ ᴍᴏʀᴇ sᴜʙsᴛᴀɴᴄᴇs ᴄᴏᴍʙɪɴᴇ ᴛᴏ ғᴏʀᴍ ᴀ sɪɴɢʟᴇ ɴᴇᴡ sᴜʙsᴛᴀɴᴄᴇ . ᴀɴᴅ ɪɴ ᴅᴇᴄᴏᴍᴘᴏsɪᴛɪᴏɴ ʀᴇᴀᴄᴛɪᴏɴs ᴏɴᴇ sᴜʙsᴛᴀɴᴄᴇ ʙʀᴇᴀᴋs ᴅᴏᴡɴ ɪɴᴛᴏ ᴛᴡᴏ ᴏʀ ᴍᴏʀᴇ sᴜʙsᴛᴀɴᴄᴇs .

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☞︎︎︎ ᴇǫᴜᴀᴛɪᴏɴs :

• ᶜᵒᵐᵇⁱⁿᵃᵗⁱᵒⁿ ʳᵉᵃᶜᵗⁱᵒⁿ - 2ᴄᴏ + ᴏ2 ➪ 2ᴄᴏ2

•ᵈᵉᶜᵒᵐᵖᵒˢⁱᵗⁱᵒⁿ ʳᵉᵃᶜᵗⁱᵒⁿ - 2ʜ2ᴏ ➪ 2ʜ2 + ᴏ2

Answer 2

Explanation:

HEY MATE HERE IS YOUR ANSWER

In a combination reaction two or more substances are combined to form new substance while in the decomposition reaction one substance decomposes into two or more substances. Hence, the decomposition reactions are called opposite of combination reactions.

Decomposition reaction CaCO3 (s) ⇨ CaO (s) + CO2 (g)

Decomposition reaction CaCO3 (s) ⇨ CaO (s) + CO2 (g)Combination reaction H2 (g) + Cl2 ⇨ 2HCl (g)

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