Question

Three samples of calcium carbonate are placed in the flask for an investigation.
In flask 'E' 5g of Caco, placed in large lumps.
In flask 'F' 5g of Caco placed in medium size lumps.
In flask 'G' 5g of Caco, placed in small lumps.
The same volume, in excess, of dilute HCI is added to each flask. Loss of mass is determined in each
(a) 02
(d) CO
flask with the help of electronic balances and graphs are plotted as shown in diagram.
(1) The three flasks and their content lose mass due to the formation of?
(6) H2
(C) CO2
(ii) How does rate of reaction change with time?
la Decreases with time
(6) Increases with time
(c) Does not change
(d) First increases, then decreases
(111) In which flask reaction is fastest.
cao
(b) E
(c) F
(d) All have equal
(iv) If we use powdered CaCO,, the reaction will be:
(a) faster
(6) slower
(c) moderate
(d) equally in both cases
(v) After how long reaction stops?
(a) 80 seconds
(b) 100 seconds
c) 140 seconds
(d) 160 seconds​

Answer 1

Answer:

1. a
2. b
3. c
4. c
5. d

Explanation:

100% correct answer

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