. (a) What happens when (i) mercuric oxide
and (ii) potassium nitrate are heated ?
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Answer:
Explanation:
1. When mercuric oxide is heated, it decomposes to give mercury and oxygen.
2. Potassium nitrate on heating gets converted into molten potassium nitrite with the release of oxygen.
(b) Potassium chlorate needs heating for quite some time (to a high temperature) before it decomposes.
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Answer:
ᴀᴄᴛɪᴏɴ ᴏғ ʜᴇᴀᴛ ɪɴ ᴍᴇɴᴄᴜʀɪᴄ ᴏxɪᴅᴇ : ᴍᴇʀᴄᴜʀɪᴄ ᴏxɪᴅᴇ ɪs ᴀ ʀᴇᴅ ᴘᴏᴡᴅᴇʀ. ᴡʜᴇɴ ɪᴛ ɪs ʜᴇᴀᴛᴇᴅ ɪɴ ᴀ ᴛᴇsᴛ ᴛᴜʙᴇ ɪᴛ ᴅᴇᴄᴏᴍᴘᴏsᴇs ᴛᴏ ɢɪᴠᴇ ᴍᴇʀᴄᴜʀʏ ᴀɴᴅ ᴏxʏɢᴇɴ.
Explanation:
ɪ ʜᴏᴘᴇ ɪᴛ ɪs ʜᴇʟᴘғᴜʟ ᴛᴏ ʏᴏᴜ....
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