3. Which of the following listed metals can displace zinc from its salt so
Give reason for your answer with a chemical equation:
Copper, Lead, Magnesium, Silver
4.A compound Z is formed by transfer of electrons from the metal X to
Identify the type of bond formed in the compound. List three properti
formed by such type of bonds.
5. State four general properties of ionic compounds.
6.Write a balanced chemical equation for representing the chemical
manganese dioxide and aluminium powder. What happens if manga
with aluminium oxide?
7.(a) What is reactivity series? How does the reactivity series of me
relative activity of various metals?
(b) Suggest different chemical processes used for obtaining a meta
Answers
Answer:
3. ᴄᴏᴘᴘᴇʀ,ʟᴇᴀᴅ,ᴍᴀɢɴᴇsɪᴜᴍ,sɪʟᴠᴇʀ. ᴍᴀɢɴᴇsɪᴜᴍ ᴡɪʟʟ ᴅɪsᴘʟᴀᴄᴇ ᴢɪɴᴄ ғʀᴏᴍ ɪᴛs sᴀʟᴛ sᴏʟᴜᴛɪᴏɴ. ʙᴇᴄᴀᴜsᴇ ɪᴛ ɪs ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴀɴ ᴢɪɴᴄ.
4. ᴛʜᴇ ʙᴏɴᴅ ғᴏʀᴍᴇᴅ ɪs ᴀɴ ᴇʟᴇᴄᴛʀᴏᴠᴀʟᴇɴᴛ ᴏʀ ɪᴏɴɪᴄ ʙᴏɴᴅ.
5. ʜᴇʀᴇ ɪs ᴀ sʜᴏʀᴛ ʟɪsᴛ ᴏғ ᴍᴀɪɴ ᴘʀᴏᴘᴇʀᴛɪᴇs:
ᴛʜᴇʏ ғᴏʀᴍ ᴄʀʏsᴛᴀʟs. ...
ᴛʜᴇʏ ʜᴀᴠᴇ ʜɪɢʜᴇʀ ᴇɴᴛʜᴀʟᴘɪᴇs ᴏғ ғᴜsɪᴏɴ ᴀɴᴅ ᴠᴀᴘᴏʀɪᴢᴀᴛɪᴏɴ ᴛʜᴀɴ ᴍᴏʟᴇᴄᴜʟᴀʀ ᴄᴏᴍᴘᴏᴜɴᴅs.
ᴛʜᴇʏ ᴀʀᴇ ʜᴀʀᴅ.
ᴛʜᴇʏ ᴀʀᴇ ʙʀɪᴛᴛʟᴇ.
ᴛʜᴇʏ ʜᴀᴠᴇ ʜɪɢʜ ᴍᴇʟᴛɪɴɢ ᴘᴏɪɴᴛs ᴀɴᴅ ᴀʟsᴏ ʜɪɢʜ ʙᴏɪʟɪɴɢ ᴘᴏɪɴᴛs.
ᴛʜᴇʏ ᴄᴏɴᴅᴜᴄᴛ ᴇʟᴇᴄᴛʀɪᴄɪᴛʏ ʙᴜᴛ ᴏɴʟʏ ᴡʜᴇɴ ᴛʜᴇʏ ᴀʀᴇ ᴅɪssᴏʟᴠᴇᴅ ɪɴ ᴡᴀᴛᴇʀ.
6. ᴡʜᴇɴ ᴀʟᴜᴍɪɴɪᴜᴍ ᴘᴏᴡᴅᴇʀ ɪs ʜᴇᴀᴛᴇᴅ ᴡɪᴛʜ ᴍᴀɴɢᴀɴᴇsᴇ ᴅɪᴏxɪᴅᴇ, ᴛʜᴇ ғᴏʟʟᴏᴡɪɴɢ ʀᴇᴀᴄᴛɪᴏɴ ᴛᴀᴋᴇs ᴘʟᴀᴄᴇ:
3ᴍɴᴏ2(s) + 4ᴀʟ(s) → 3ᴍɴ(ʟ) + 2ᴀʟ2ᴏ3(s) + ʜᴇᴀᴛ
ᴡʜᴇɴ ᴍᴀɴɢᴀɴᴇsᴇ ᴘᴏᴡᴅᴇʀ ɪs ʜᴇᴀᴛᴇᴅ ᴡɪᴛʜ ᴀʟᴜᴍɪɴᴜᴍ ᴏxɪᴅᴇ, ɴᴏ ʀᴇᴀᴄᴛɪᴏɴ ᴛᴀᴋᴇs ᴘʟᴀᴄᴇ ʙᴇᴄᴀᴜsᴇ ᴍᴀɴɢᴀɴᴇsᴇ ɪs ʟᴇss ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴀɴ ᴀʟᴜᴍɪɴɪᴜᴍ ᴀɴᴅ ʜᴇɴᴄᴇ ᴛʜᴇʀᴇ ᴡɪʟʟ ʙᴇ ɴᴏ ᴅɪsᴘʟᴀᴄᴇᴍᴇɴᴛ ʀᴇᴀᴄᴛɪᴏɴ.
7. (ᴀ)ᴛʜᴇ ᴀʀʀᴀɴɢᴇᴍᴇɴᴛ ᴏғ ᴍᴇᴛᴀʟs ɪɴ ᴀ sᴇʀɪᴇs ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ ᴛʜᴇ ᴅᴇᴄʀᴇᴀsɪɴɢ ᴏʀᴅᴇʀ ᴏғ ᴛʜᴇɪʀ ʀᴇᴀᴄᴛɪᴠɪᴛʏ ɪs ᴄᴀʟʟᴇᴅ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs. ᴛʜᴇ ᴍᴇᴛᴀʟs ᴛʜᴀᴛ ᴀʀᴇ ᴘʟᴀᴄᴇᴅ ᴀʙᴏᴠᴇ ʜʏᴅʀᴏɢᴇɴ ᴀʀᴇ ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴀɴᴅ ᴛʜᴏsᴇ ʙᴇʟᴏᴡ ʜʏᴅʀᴏɢᴇɴ ᴀʀᴇ ʟᴇss ʀᴇᴀᴄᴛɪᴠᴇ. ... ᴛʜᴜs ᴀ ᴍᴇᴛᴀʟ ᴘʟᴀᴄᴇᴅ ᴀʙᴏᴠᴇ ɪɴ sᴇʀɪᴇs ɪs ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴀɴ ᴍᴇᴛᴀʟs ᴘʟᴀᴄᴇᴅ ʙᴇʟᴏᴡ ɪᴛ.
(ʙ) ᴛᴀᴋᴇ ᴀɴ ᴏɴʟɪɴᴇ ᴛᴇsᴛ ᴛᴀᴋᴇ ɴᴏᴡ
ʟᴏɢɪɴ
sᴛᴜᴅʏʀᴀɴᴋᴇʀsᴏɴʟɪɴᴇ
ᴀsᴋ ᴀ ǫᴜᴇsᴛɪᴏɴ
ᴀ) ᴡʜᴀᴛ ɪs ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ? ʜᴏᴡ ᴅᴏᴇs ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ᴏғ ᴍᴇᴛᴀʟs ʜᴇʟᴘ ɪɴ ᴘʀᴇᴅɪᴄᴛɪɴɢ ᴛʜᴇ ʀᴇʟᴀᴛɪᴠᴇ ᴀᴄᴛɪᴠɪᴛɪᴇs ᴏғ ᴠᴀʀɪᴏᴜs ᴍᴇᴛᴀʟs ?
+–
0
ᴠᴏᴛᴇs
3.5ᴋ ᴠɪᴇᴡs
ᴀsᴋᴇᴅ ᴊᴜɴ 22, 2018 ɪɴ ᴄʟᴀss x sᴄɪᴇɴᴄᴇ ʙʏ ᴘʀɪʏᴀ12 (-12,629 ᴘᴏɪɴᴛs)
ᴀ) ᴡʜᴀᴛ ɪs ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ? ʜᴏᴡ ᴅᴏᴇs ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ᴏғ ᴍᴇᴛᴀʟs ʜᴇʟᴘ ɪɴ ᴘʀᴇᴅɪᴄᴛɪɴɢ ᴛʜᴇ ʀᴇʟᴀᴛɪᴠᴇ ᴀᴄᴛɪᴠɪᴛɪᴇs ᴏғ ᴠᴀʀɪᴏᴜs ᴍᴇᴛᴀʟs ?
ʙ) sᴜɢɢᴇsᴛ ᴅɪғғᴇʀᴇɴᴛ ᴄʜᴇᴍɪᴄᴀʟ ᴘʀᴏᴄᴇssᴇs ᴜsᴇᴅ ғᴏʀ ᴏʙᴛᴀɪɴɪɴɢ ᴀ ᴍᴇᴛᴀʟ ғʀᴏᴍ ɪᴛs ᴏxɪᴅᴇs ᴏғ ᴍᴇᴛᴀʟs ɪɴ ᴛʜᴇ ᴍɪᴅᴅʟᴇ ᴏғ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ᴀɴᴅ ᴍᴇᴛᴀʟs ᴛᴏᴡᴀʀᴅs ᴛʜᴇ ᴛᴏᴘ ᴏғ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs. sᴜᴘᴘᴏʀᴛ ʏᴏᴜʀ ᴀɴsᴡᴇʀ ᴡɪᴛʜ ᴏɴᴇ ᴇxᴀᴍᴘʟᴇ ᴇᴀᴄʜ.
ᴀɴsᴡᴇʀ
ᴘʟᴇᴀsᴇ ʟᴏɢ ɪɴ ᴏʀ ʀᴇɢɪsᴛᴇʀ ᴛᴏ ᴀɴsᴡᴇʀ ᴛʜɪs ǫᴜᴇsᴛɪᴏɴ.
1 ᴀɴsᴡᴇʀ
+–
0
ᴠᴏᴛᴇs
ᴀɴsᴡᴇʀᴇᴅ ᴊᴜɴ 22, 2018 ʙʏ ᴀᴅɪᴛʏᴀ23 (-2,145 ᴘᴏɪɴᴛs)
(ᴀ) ᴛʜᴇ ᴀʀʀᴀɴɢᴇᴍᴇɴᴛ ᴏғ ᴍᴇᴛᴀʟs ɪɴ ᴀ sᴇʀɪᴇs ᴀᴄᴄᴏʀᴅɪɴɢ ᴛᴏ ᴛʜᴇ ᴅᴇᴄʀᴇᴀsɪɴɢ ᴏʀᴅᴇʀ ᴏғ ᴛʜᴇɪʀ ʀᴇᴀᴄᴛɪᴠɪᴛʏ ɪs ᴄᴀʟʟᴇᴅ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs. ᴛʜᴇ ᴍᴇᴛᴀʟs ᴛʜᴀᴛ ᴀʀᴇ ᴘʟᴀᴄᴇᴅ ᴀʙᴏᴠᴇ ʜʏᴅʀᴏɢᴇɴ ᴀʀᴇ ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴀɴᴅ ᴛʜᴏsᴇ ʙᴇʟᴏᴡ ʜʏᴅʀᴏɢᴇɴ ᴀʀᴇ ʟᴇss ʀᴇᴀᴄᴛɪᴠᴇ. ᴀ ᴍᴇᴛᴀʟ ᴘʟᴀᴄᴇᴅ ᴀʙᴏᴠᴇ ᴀɴᴏᴛʜᴇʀ ᴍᴇᴛᴀʟ ᴄᴀɴ ᴅɪsᴘʟᴀᴄᴇ ʟᴏᴡᴇʀ ᴍᴇᴛᴀʟ ғʀᴏᴍ ɪᴛs sᴀʟᴛ sᴏʟᴜᴛɪᴏɴ. ᴛʜᴜs ᴀ ᴍᴇᴛᴀʟ ᴘʟᴀᴄᴇᴅ ᴀʙᴏᴠᴇ ɪɴ sᴇʀɪᴇs ɪs ᴍᴏʀᴇ ʀᴇᴀᴄᴛɪᴠᴇ ᴛʜᴀɴ ᴍᴇᴛᴀʟs ᴘʟᴀᴄᴇᴅ ʙᴇʟᴏᴡ ɪᴛ.
(ʙ) ᴍᴇᴛᴀʟs ᴘʟᴀᴄᴇᴅ ɪɴ ᴛʜᴇ ᴍɪᴅᴅʟᴇ ᴏғ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴠɪᴛʏ sᴇʀɪᴇs ᴀʀᴇ ᴏʙᴛᴀɪɴᴇᴅ ғʀᴏᴍ ᴛʜᴇɪʀ ᴏxɪᴅᴇs ʙʏ ʀᴇᴅᴜᴄᴛɪᴏɴ ᴍᴇᴛʜᴏᴅ. sᴜɪᴛᴀʙʟᴇ ʀᴇᴅᴜᴄɪɴɢ ᴀɢᴇɴᴛs ᴀʀᴇ ᴜsᴇᴅ. ғᴏʀ ᴇxᴀᴍᴘʟᴇ, ᴢɪɴᴄ ᴍᴇᴛᴀʟ ᴄᴀɴ ʙᴇ ᴏʙᴛᴀɪɴᴇᴅ ғʀᴏᴍ ɪᴛs ᴏxɪᴅᴇ ʙʏ ᴜsɪɴɢ ᴄᴀʀʙᴏɴ ᴀs ʀᴇᴅᴜᴄɪɴɢ ᴀɢᴇɴᴛ.
ᴢɴᴏ+ᴄ → ᴢɴ + ᴄᴏ
ᴍᴇᴛᴀʟs ᴘʟᴀᴄᴇᴅ ᴀᴛ ᴛᴏᴘ ᴏғ sᴇʀɪᴇs ᴄᴀɴ ʙᴇ ᴇxᴛʀᴀᴄᴛᴇᴅ ʙʏ ᴜsɪɴɢ ᴇʟᴇᴄᴛʀᴏʟʏsɪs ᴍᴇᴛʜᴏᴅ. ᴇxᴀᴍᴘʟᴇ - ᴀʟᴜᴍɪɴɪᴜᴍ ɪs ᴏʙᴛᴀɪɴᴇᴅ ʙʏ ᴇʟᴇᴄᴛʀᴏʟʏᴛɪᴄ ʀᴇᴅᴜᴄᴛɪᴏɴ ᴏғ ᴀʟᴜᴍɪɴɪᴜᴍ ᴏxɪᴅᴇ.