Please write right answer...of questions number 35 and 36...
Answers
35ans: (a)
Washing soda is often made from the ashes of burned plants, which is why it’s sometimes known as soda ash. Another way it’s made is by simply putting baking soda in the oven. Heating baking soda in the oven causes a chemical reaction that changes the baking soda compound, transforming it into washing soda. Please note, that making your own chemicals at home can be extremely dangerous, so we don’t recommend trying to make your own washing soda.
properties:
REMOVES STAINS.Washing soda is highly alkaline, and can act as a solvent to remove some stains.
REMOVES GREASY BUILD-UP IN POTS AND PANS.It can be used to remove tough stains off kitchenware or to remove soap scum off bathroom and kitchen surfaces.
UNCLOGS DRAINS.Washing soda and boiling water can be used to unclog drains.
CLEANS OUTDOOR FURNITURE.Controls aphids, whiteflies, and black spots on roses. Mix it with water in a spray bottle and spray on plants to help control outdoor pests.
(b)
Plaster of Paris is prepared by heating gypsum at 373 K. On heating, it loses water molecules and becomes calcium sulphate hemihydrate (CaSO4. 1/2 H2O) which is called Plaster of Paris.
36ans :(a)
The ethanoic acid reacts with the sodium hydrogen carbonate to form carbon dioxide gas and water. The carbon dioxide gas produced rushes away from the solution. This is seen as bubbles.
(b)
Esterification occurs when a carboxylic acid reacts with an alcohol. This reaction can only occur in the presence of an acid catalyst and heat. ... This reaction lost an -OH from the carboxylic acid and a hydrogen from the alcohol. These two also combine to form water.
(c)
C2H5COONa + NaOH + CaONaOH+CaO \stackrel{\Delta}{\rightarrow} C_{2} H_{6}+N a_{2} C O_{3}→ΔC2H6+Na2CO3
(d) :
Structural Formula

C3H6O2
propanoic acid 
propionic acid 
open ths OBJ and see structure.
Benzene

Geometry

open OBJ for benzene structure
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