2.Write the chemical reaction and explain the following
a.Carbon dioxide is past through to aqueous sodium hydroxide
b.Methane reacts with chlorine gas
Answers
Answer:
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
a.Carbon dioxide is past through to aqueous sodium hydroxide
CO2(acidic gas) + NaOH(basic solution)→2Na+(sodium ions) + CO3 ²¯ (carbonate ion) + H2O (water)
This won't affect the physical appearance of solution but its volume will keep on increasing upto a limit and after that no further increase in volume is observed. This limit is the point when all the dissociated OH¯ ions are already consumed by CO2.
b.Methane reacts with chlorine gas
When methane reacts with chlorine in presence of sunlight, it undergoes chlorination to form methyl chloride.
CH
4
+Cl
2
hv
CH
3
Cl+HCl
This reaction go on further to produce polyhalogen derivative of alkane until all the hydrogen atom on methane is replaced by the corresponding number of the chlorine atom.
CH
3
Cl+Cl
2
hv
CH
2
Cl
2
+HCl
CH
2
Cl
2
+Cl
2
Hv
CHCl
3
+HCl
CH
3
Cl+Cl
2
hv
CCl
4
+HCl