Suppose U have to extract metal M from its enriched sulphade ore if Mis the middle of the reactivity series write various steps used in extracting theis metal
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M is in the middle of the reactivity series. Various steps which can be used to extract it from its enriched sulphide ore are as follows:
(i) Roasting: The enriched sulphide ore of ‘M’ is strongly heated in the presence of air to convert it into metal oxide.
(ii) Reduction: The metal oxides obtained by roasting is converted to free metal ‘M’ by reducing agents like carbon, aluminium, sodium or calcium.
(iii) Refining: The metal ‘M’ obtained by reduction contains some impurities. Thus this impure metal ‘M’ undergoes purification. The process of purifying impure metal is called refining. The most widely used method for refining is electrolytic refining.
(i) Roasting: The enriched sulphide ore of ‘M’ is strongly heated in the presence of air to convert it into metal oxide.
(ii) Reduction: The metal oxides obtained by roasting is converted to free metal ‘M’ by reducing agents like carbon, aluminium, sodium or calcium.
(iii) Refining: The metal ‘M’ obtained by reduction contains some impurities. Thus this impure metal ‘M’ undergoes purification. The process of purifying impure metal is called refining. The most widely used method for refining is electrolytic refining.
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ᴛʜᴇ ᴍᴇᴛᴀʟs ɪɴ ᴛʜᴇ ᴍɪᴅᴅʟᴇ ᴏғ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ᴀʀᴇ MODERATELY REACTIVE. THESE ARE ᴜsᴜᴀʟʟʏ ᴘʀᴇsᴇɴᴛ ᴀs sᴜʟᴘʜɪᴅᴇs ᴏʀ ᴄᴀʀʙᴏɴᴀᴛᴇs ɪɴ ɴᴀᴛᴜʀᴇ ᴛʜᴇ ᴍᴇᴛᴀʟ sᴜʟᴘʜɪᴅᴇs ᴀɴᴅ ᴄᴀʀʙᴏɴᴀᴛᴇs ᴍᴜsᴛ ʙᴇ ᴄᴏɴᴠᴇʀᴛᴇᴅ ɪɴᴛᴏ ᴍᴇᴛᴀʟ ᴏxɪᴅᴇs.
ᴛʜᴇ sᴜʟᴘʜɪᴅᴇ ᴏʀᴇs ᴀʀᴇ ᴄᴏɴᴠᴇʀᴛᴇᴅ ɪɴᴛᴏ ᴏxɪᴅᴇs ʙʏ ʜᴇᴀᴛɪɴɢ sᴛʀᴏɴɢʟʏ ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴇxᴄᴇss ᴀɪʀ. ᴛʜɪs ᴘʀᴏᴄᴇss ɪs ᴋɴᴏᴡɴ ᴀs ʀᴏᴀsᴛɪɴɢ.
ᴛʜᴇ ᴄᴀʀʙᴏɴᴀᴛᴇs ᴏʀᴇs ᴀʀᴇ ᴄʜᴀɴɢᴇᴅ ɪɴᴛᴏ ᴏxɪᴅᴇs ʙʏ ʜᴇᴀᴛɪɴɢ sᴛʀᴏɴɢʟʏ ɪɴ ʟɪᴍɪᴛᴇᴅ ᴀɪʀ. ᴛʜɪs ᴘʀᴏᴄᴇss ɪs ᴋɴᴏᴡɴ ᴀs ᴄᴀʟᴄɪɴᴀᴛɪᴏɴ.
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ᴛʜᴇ ᴍᴇᴛᴀʟs ɪɴ ᴛʜᴇ ᴍɪᴅᴅʟᴇ ᴏғ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ᴀʀᴇ MODERATELY REACTIVE. THESE ARE ᴜsᴜᴀʟʟʏ ᴘʀᴇsᴇɴᴛ ᴀs sᴜʟᴘʜɪᴅᴇs ᴏʀ ᴄᴀʀʙᴏɴᴀᴛᴇs ɪɴ ɴᴀᴛᴜʀᴇ ᴛʜᴇ ᴍᴇᴛᴀʟ sᴜʟᴘʜɪᴅᴇs ᴀɴᴅ ᴄᴀʀʙᴏɴᴀᴛᴇs ᴍᴜsᴛ ʙᴇ ᴄᴏɴᴠᴇʀᴛᴇᴅ ɪɴᴛᴏ ᴍᴇᴛᴀʟ ᴏxɪᴅᴇs.
ᴛʜᴇ sᴜʟᴘʜɪᴅᴇ ᴏʀᴇs ᴀʀᴇ ᴄᴏɴᴠᴇʀᴛᴇᴅ ɪɴᴛᴏ ᴏxɪᴅᴇs ʙʏ ʜᴇᴀᴛɪɴɢ sᴛʀᴏɴɢʟʏ ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴇxᴄᴇss ᴀɪʀ. ᴛʜɪs ᴘʀᴏᴄᴇss ɪs ᴋɴᴏᴡɴ ᴀs ʀᴏᴀsᴛɪɴɢ.
ᴛʜᴇ ᴄᴀʀʙᴏɴᴀᴛᴇs ᴏʀᴇs ᴀʀᴇ ᴄʜᴀɴɢᴇᴅ ɪɴᴛᴏ ᴏxɪᴅᴇs ʙʏ ʜᴇᴀᴛɪɴɢ sᴛʀᴏɴɢʟʏ ɪɴ ʟɪᴍɪᴛᴇᴅ ᴀɪʀ. ᴛʜɪs ᴘʀᴏᴄᴇss ɪs ᴋɴᴏᴡɴ ᴀs ᴄᴀʟᴄɪɴᴀᴛɪᴏɴ.
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