Write the balanced equation for: Action of dilute hydrochloric acid on sodium sulphide.
Action of dilute hydrochloric acid on sodium sulphide. Na2S + 2HCl ⟶ 2NaCl + H2S (g)
Fill in the blank from the choices in the bracket : Quicklime is not used to dry HCl gas because …………… [CaO is alkaline, CaO is acidic, CaO is neutral]
Quicklime is not used to dry HCl gas because CaO is alkaline.
State one appropriate observation for : (i) Copper sulphide is treated with dilute hydrochloric acid. (ii) A few drops of dil. HCl are added to AgNO3 soln. followed by addition of NH4OH soln.
(i) A colourless gas having smell of rotten eggs is given off. The gas evolved is H2S CuS + 2HCl ⟶ CuCl2 + H2S (ii) Curdy white precipitate of silver chloride…
Identify the gas evolved when : (i) Potassium sulphite is treated with dilute hydrochloric acid. (ii) Concentrated hydrochloric acid is made to react with manganese dioxide.
(i) Sulphur dioxide gas (ii) Chlorine gas MnO2 + 4HCl MnCl2 + 2H2O + Cl2
Give balanced equations with conditions, if any, for the following conversions A to D. A : Sodium Chloride ⟶ Hydrogen Chloride B : Hydrogen Chloride ⟶ Iron (II) chloride C : Hydrogen Chloride ⟶ Ammonium chloride D : Hydrogen Chloride ⟶ Lead chloride.
A : NaCl + H2SO4 NaHSO4 + HCl B: Fe + 2HCl (dil.) ⟶ FeCl2 + H2 [g] C: NH4OH + HCl (dil.)⟶ NH4Cl + H2O D : PbO2 + 4HCl PbCl2…
Give a balanced equation for the reaction : Conc. hydrochloric acid and potassium permanganate solution.
2KMnO4 + 16HCl 2KCl + 2MnCl2 + 8H2O + 5Cl2
Give reason for the following : Hydrogen chloride gas cannot be dried over quick lime.
Quicklime [CaO] is alkaline in nature and it reacts with HCl forming the respective chloride. Hence, it can't be used as a drying agent.
Rewrite the correct statement with the missing word/s : Aqua regia contains one part by volume of nitric acid and three parts by volume of hydrochloric acid.
Aqua regia contains one part by volume of conc. nitric acid and three parts by volume of conc. hydrochloric acid.
In the laboratory preparation of hydrochloric acid, hydrogen chloride gas is dissolved in water. (i) Draw a diagram to show the arrangement used for the absorption of HCl gas in water. (ii) State why such an arrangement is necessary? Give two reasons for the same. (iii) Write balanced chemical equations for the laboratory preparation of HCl gas when the reactants are : (A) below 200°C (B) above 200°C
(i) Below diagrams show the special funnel arrangement used for the absorption of HCl gas in water: (ii) The reasons are : Prevents or minimizes back-suction of water. Provides a…
Write balanced equation of dil. HCl with Calcium bicarbonate.
Ca(HCO3)2 + 2HCl ⟶ CaCl2 + 2H2O + 2CO2