Q. Study the reaction scheme below and then answer the following: 
M a r b l e   C a l c i u m   o x i d e   +   G a s   A                                                                     L i t t l e   w a t e r                                                     S o l i d   B       S t r o n g   h e a t                           +   e x c e s s   w a t e r   a n d   f i l t e r                                                   S o l u t i o n   C                                                
a) Give the chemical formula of (i) Marble (ii) Gas A  (iii) Solid B
b) Solution C is normally called ______, when Gas A is bubbled through Solution C, a white precipitate of _________ is formed.
c) On bubbling excess of Gas A through the white precipitate in "b", the white precipitate dissolves form____
 
 

Dear student,
(a)
 1. Marble is in general terms metamorphosed limestone, mostly composed of recrystallised carbonate minerals. So the bulk of marble is just CaCO3.
2.  Gas A is carbondi oxide
3.  Solid B is calcium hydrooxide

​(b) quicklime, 
It is calcium carbonate, CaCO3, a white insoluble compound
(c) calcium bicarbonate



Regards



 

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