Answer these questions:
a) Why should curd and sour substance not be kept in brass and copper vessels?
b) Which gas is usually liberated when an acid reacts with a metal? Illustrate an example.
c) How will you test for the presence of this gas?
Answers
Answered by
0
Answer:
(I) because brass and copper metals are reactive with curd.
(ii)Hydrogen gas is usually liberated when an acid reacts with a metal. 2HCl+ Fe=FeCl2+H2
(ii) first bring a candle near the gas and it burat with a pop sound, then it is a hydrogen gas.
Answered by
1
Answer:
a- because the sour substance contains acid which can react with brass or copper and form toxic substances that can harmful for us
b- hydrogen
c- take a test tube and put acid and metal in it then take a pipe whose one end is attached to test tube and another is going from soap water. then heat the test tube and take burning candel near the pipe you will hear pop sound that is because of hydrogen
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