Preparations and Uses of Sodium Bicarbonate and Common Salt
Trending Questions
Q. A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid releases 0.25 ml of CO2 at T=298.15 K and p=1 bar. If molar volume of CO2 is 25.0L under such condition, what is the percentage of sodium bicarbonate in each tablet?
[Molar mass of NaHCO3=84 g mol−1]
[Molar mass of NaHCO3=84 g mol−1]
- 16.8
- 0.84
- 33.6
- 8.4
Q. The raw materials used in solvay's process are as follows :
NaCl, CaCO3, C, H2SO4
NaOH, CO2
NaCl, CO2
NaCl, NH3, CaCO3
Q. In the manufacture of sodium carbonate, the following reactions are involved:
(A)Δ−→(B)+CO2
(B)+H2O→(C)NH4Cl−−−−→(D)
(E)+CO2→(F)
(F)+NaCl→GHeat−−−→Na2CO3+CO2+H2O
(D) is a gas which is soluble in H2O
(G) is NaHCO3. The other compound formed with (G) is
(A)Δ−→(B)+CO2
(B)+H2O→(C)NH4Cl−−−−→(D)
(E)+CO2→(F)
(F)+NaCl→GHeat−−−→Na2CO3+CO2+H2O
(D) is a gas which is soluble in H2O
(G) is NaHCO3. The other compound formed with (G) is
- NH4Cl
- NH4OH
- CaCl2
- None of these
Q. A sodium salt on treatment with MgCl2 gives white precipitate only one heating. The anion of the sodium salt is
- HCO−3
- CO2−3
- NO−3
- SO2−4
Q. The addition of Na2CO3, to the aqueous solution of an oxide produces CO2. This reaction indicates that
- Oxide is basic
- Oxide is neutral
- Oxide is that of a metal
- Oxide is that of a non-metal
Q. The commercial NaCl salt is purified by passing
- HCl gas through a saturated salt solution
- H2 gas through a saturated salt solution
- H2S gas through an alkaline salt solution
- Cl2 gas through a saturated salt solution
Q. NaHCO3 solution is
- weakly acidic
- strongly basic
- strongly acidic
- weakly basic
Q. NaCl can be used in preparation of which of the following compounds?
- Na2O2
- Na2SO4
- NaOH
- Na2CO3
Q. Which of the following objects are soluble in water?
- Table salt
- Fodder
- Clay
- Chalk powder
Q.
What are the two main ways in which common salt (sodium chloride) occurs in nature ?