Question

please solve que 5,6,7?

Answer 1

7.a it is sodium chloride it form by mixture of sodium and chlorine na +cl2
b. it is mineral of sodium chloride it is colourless or white
c.nacl+h2o------naoh+h2+cl2
6.sodium and calcium in form of carbonate and water , ammonia
process-
nacl + h2o+co2+nh3---------nh4cl +nahco3
next step
nahco3+<heat> --------na2co3+co2+h20
next step
water is added to soda ash and recrystallized to obtain washing soda
na2co3+10 h2o-------na2co3.10h2o
5.> sorry dont know

Answer 2

5:Salt has often held a bad reputation for being harmful to the bodily functions such as nerves impulses blood pressure and digestion would not have been possible if salt wasn't involved. Salts help the body by making solutions that are acidic basic or neutral. Depending on the situation to functions and maintain its natural process.
Salt hydrolysis is a reaction when salt completely dissociate in water and it's anion or cation reach with the water to produce hydroxide ions or hydronium ions that effect the pH of the solutions.
Salt is divided into three categories :
Acidic salts
Basic salts
Neutral salts

Acidic: Salts formed by the neutralisation of strong acid and strong Base ate neutral in nature as the bonds in the salt solutions will not break apart. They generally get hydrated but don't hydrolyse. Therefore such salts are known as neutral salts. Eg.. NaCl

Basic salt:Salts formed by the neutralisation of weak acid and strong Base are basic in mature. Eg.. CH3COONa
CH3COONa(aq)- CH3COO_ (aq) + Na +(aq)
Acetate ion formed undergoes hydrolysis to form acetic acid and OH_ions
CH3COO_(aq) + H2O =Ch3COOH(aq+OH_(aq)
As we know acetic acid is weak it remains unionised in the solution. This results in an increase in concentration of OH_ions which makes the solutions alkaline.

Acidic salt; Salts formed by the neutralisation of strong acid and weak Base are acidic in nature. Eg.. NH4Cl
NH4Cl(aq) - Cl_(aq) +NH4+(aq)
Ammonium ion formed undergoes hydrolysis to form ammonium hydroxide and H+ions.
NH4+(aq) +H20=NH4OH(aq) +H+(aq).
6:Raw materials which are used shutter manufacturers washing soda in solvay process are sodium chloride ammonia, limestone.
7:a) The salt is used in food in commonly known as table salt or common salt. Its chemical name is sodium chloride and chemical formula is NaCl. It can be obtained by the neutralisation reaction of sodium hydroxide (base) and hydrochloric (acid).
NaOH+HCl-NaCl+H2o.
The common salt is obtained from sea water.
B: Rock salt is the mineral form of sodium chloride. It is an ore of sodium. It is slightly colourless also can be said as white. It is due to crystallisation.
C: When electricity is passed through brine, sodium hydroxide is formed alone with the liberation of hydrogen gas at cathode and chlorine gas at the anode.
HOPE THIS HELPS.