identify carboxylic acid using sodium carbonate

Question 1

define lime water test

Answer 1

we use lime water test to detect the pressure of CO2 gas

Question 2

what is the general formula for oxalic acid

Answer 2

H2C204

Question 3

which carboxylic acid is responsible for odour and taste of vinegar

Answer 3

vinegar is dilute solution of acetic acid. Its odour and taste is due to the acetic taste in it

Question 4

what are the products when carboxylic acid reacts with bicarbonates

Answer 4

metal carboxylate , carbon dioxide gas and water. When the sodium bicarbonates reacts with acetic acid, sodium acetate, CO2 and water is formed .

Question 5

where does carbon dioxide comes from

Answer 5

from bicarbonates

Question 6

which to functional group are joined together to give carboxylic acid group.

Answer 6

1) carboxyl group
2) hydroxyl group

Question 7

name some commonly used carboxylic acid

Answer 7

1) acetic acid
2)oxalic acid
3)succinic acid

Question 8

while the preparing the cakes and cookies, Why the flour swells up with the addition of baking soda in it

Answer 8

it swells up due to evolution of carbon dioxide gas

Question 9

write down the observation of the reaction of the carboxylic acid with ferric chloride and sulphuric acid

Answer 9

2FeCl3 + 2H2C2O4 + 2H2SO4——————–>2FeO4S + 6HCL + 2CO2