Chemistry
Carbon dioxide occurs both in the free state and in the combined state. State three methods how carbon dioxide is added to the atmosphere.
Related Questions
State in brief the transformation of vegetable matter to different types of coal varying in carbon content. State two uses each of
(a) coal
(b) coke
(c) lampblack or soot
'Wood charcoal' - an amorphous allotrope of carbon reduces heated metallic oxides to metals. Give a balanced equation to support the statement.
In the laboratory preparation of carbon dioxide by action of a dilute acid on a metallic carbonate give -
(a) A balanced equation for the preparation
(b) A reason for
(i) use of a washer bottle containing conc. H2SO4 in the preparation
(ii) Not collecting the prepared gas over water
(iii) Not using dilute sulphuric acid as a reactant in the preparation.
How would you prove experimentally that
(a) Carbon dioxide does not support combustion
(b) Is slightly acidic in nature.