Question

Sample
28. A metal is treated with dilute sulphuric acid. The gas evolved is collected by the methods
figure :
(a) Name the gas.
(b) Is the gas soluble or insoluble in water ?
(C) Is the gas lighter or heavier than air ?
(d) How will you test the gas ?
(e) If the metal used above is zinc then write the chemical equation for the evolution of
(f) Write one industrial use of the gas evolved.​

Answer 1

Answer:

(ᴀ) ʜʏᴅʀᴏɢᴇɴ ɢᴀs, ʙᴇᴄᴀᴜsᴇ ᴡʜᴇɴ ᴍᴇᴛᴀʟ ʀᴇᴀᴄᴛ ᴡɪᴛʜ ᴀᴄɪᴅ, ɪᴛ ғᴏʀᴍs sᴀʟᴛ ᴀɴᴅ ʜʏᴅʀᴏɢᴇɴ ɢᴀs.

ᴍᴇᴛᴀʟ +ᴀᴄɪᴅ - sᴀʟᴛ + ʜ2⬆

(ʙ) ɪɴsᴏʟᴜʙʟᴇ ɪɴ ᴡᴀᴛᴇʀ

(ᴄ) ᴅᴏᴡɴᴡᴀʀᴅ ᴅɪsᴘʟᴀᴄᴇᴍᴇɴᴛ ᴏғ ᴡᴀᴛᴇʀ

(ᴅ) ᴛʜᴇ ɢᴀs ʜ2 ɪs ʟɪɢʜᴛᴇʀ ᴛʜᴀɴ ᴀɪʀ

Answer 2

Answer:

1. hydrogen gas
2. insoluble in water
3. lighter air
4. it will burned with pop sound
5. Zn + H2So4 -----ZnSo4 +H2