Question

35. Answer the following questions :
(1) State the reaction of sodium carbonate and sodium hydrogen carbonate with
dilute hydrochloric acid and write their balanced equations.
(2) Which products are obtained on passing carbon dioxide in less proportion and
in more proportion in solution of calcium hydroxide ? State the solubility of
products in water.
OR
Write the preparation of baking soda and its four uses.
36. What is functional group ? State any four functional groups. Give two examples of
each​

Answer 1

Answer:

1)Balance the equation Na2CO3 + HCl NaCl + CO2 + H2O.

2)Preparation of Baking Soda

Solvay process is used for the production of sodium bicarbonate and sodium carbonate industrially. In this process carbon dioxide, water, ammonia and brine solution in its concentrated form, are used as raw materials. This process is used mainly because it is inexpensive and less number of raw materials are used to produce necessary chemicals. The important chemical reaction that is used in the production of baking soda and sodium carbonate is:

CO2+H2­­­o+NH3+Na+ → NaHCO3+NH+4

NaHCO3 → Na2CO3+CO2+H2O

Carbon dioxide produced is recycled to produce NaHCO3

Uses of Baking Soda

Reduces the acidity in the stomach

Acts as an antacid which is used to treat stomach upset and indigestion

Used in the process of washing as a water softener

Due to the formation of soapy foam, it is used in fire extinguishers

Removes the dirt off materials without damaging the properties of the material

Acts as a pesticide

Used in baking industries as carbon dioxide is generated (due to the decomposition of NaHCO3) which helps in the raising of the dough

It is used in ear drops, cosmetics, and personal care products

It is used as a neutralizer to neutralize the effect of acid

36.Functional groups are collections of atoms that attach the carbon skeleton of an organic molecule and confer specific properties.

Answer 2

Answer:

yrytri7yiuyjriytdkttyiftkyrk6u6ic i77i  8i67ro8 9t 86eu5rkuyg yuutm mb vhfjh mftystek6tumnnbdtheyh mcyrdetgkj he76yo bhfgsrtribmn jgrkfnb  fytrfb nhiueyrxnbmnbjgkjbzjucagiab adg d quidhqiduhweswiqhchwbgf9eyf wifwhfw weufgery7fyw whfbefywiufsvguebyhfjhwbvjehweyfgwhvw cwefyw evwyfgwifuhugfbwifegfuwehf webfw fbwefiuwfhw fwe fwf w f eth tyh es vf hjy j rtef h yuk ty bs v fgj yu kr vs fg ty jtujhthtyjdrvryty hrt hyuj trgrthtyjr vrevdsv df hyt htgrthrteg wrg rth tyhbw ef we gtyjtyh ergfsdg erh yt jrt h

Explanation: