Hydrogen Chloride Archives - Flash Education

Identify the gas evolved and give the chemical test when dilute hydrochloric acid reacts with :
(i) Sodium sulphite.
(ii) Iron [II] sulphide.

(i) SO2 is evolved when dilute hydrochloric acid reacts with sodium sulphite. Na2SO3 + 2HCl ⟶ 2NaCl + H2O + SO2 [g] (ii) H2S gas is evolved when dilute hydrochloric acid reacts with…

State your observations when dilute hydrochloric acid is added to :
(i) Lead nitrate soln. and the mixture is heated.
(ii) Copper carbonate.
(iii) Sodium thiosulphate.

(i) White precipitate of PbCl2 is formed which is soluble in hot water. Pb(NO3)2 + 2HCl ⟶ PbCl2 ↓ + 2HNO3 (ii) Effervescence of CO2 seen which turns lime water milky CuCO3 + 2HCl ⟶…

Write balanced chemical equation for : Action of hydrochloric acid on sodium bicarbonate.

NaHCO3 + HCl ⟶ NaCl + H2O + CO2 ↑

Fill in the blank : ……………[AgCl / PbCl2], a white precipitate is soluble in excess NH4OH.

AgCl, a white precipitate is soluble in excess NH4OH.

Select the correct answer from A, B, C and D : The aim of the Fountain experiment is to prove that :
(A) HCl turns blue litmus red
(B) HCl is denser than air
(C) HCl is highly soluble in water
(D) HCl fumes in moist air.

The following questions pertain to the laboratory preparation of hydrogen chloride gas:
(i) Write the equation for it’s preparation mentioning the condition required.
(ii) Name the drying agent used in the above preparation and give a reason for the choice.
(iii) State a safety precaution taken during the preparation of hydrochloric acid.

(i) The equation for the laboratory preparation of hydrogen chloride gas : NaCl + H2SO4 NaHSO4 + HCl (ii) Concentrated sulphuric acid is used as the drying agent used in…

Identify the acid which on mixing with AgNO3 soln. gives a white precipitate, soluble in excess ammonium hydroxide.

Dilute hydrochloric acid AgNO3 + HCl ⟶ AgCl (white ppt.) + HNO3

Select from the gases — ammonia, ethane, hydrogen chloride, hydrogen sulphide, ethyne — The gas which produces dense white fumes with ammonia gas.

Hydrogen chloride NH3 (g) + HCl (g) ⟶ NH4Cl (s) When a gas jar containing HCl gas in inverted over a jar full of ammonia gas, dense white fumes are…

Study the figure given below and answer the questions that follow :

(i) Identify the gas Y.
(ii) What property of gas Y does this experiment demonstrate?
(iii) Name another gas which has the same property and can be demonstrated through this experiment.

(i) Dry HCl (Hydrogen chloride) gas is the gas Y (ii) High solubility of HCl in water (iii) Ammonia (NH3) gas also demonstrates high solubility in water.

State your observation: Dilute HCl is added to sodium carbonate crystals.

Na2CO3 + 2HCl ⟶ 2NaCl + H2O + CO2 ↑