Chemistry
Give reasons for the following :
Iron sheets are cleaned with hydrochloric acid before dipping into molten zinc for galvanizing.
Related Questions
Give reasons for the following :
Dense white fumes are obtained when a jar of HCl gas is inverted over a jar of ammonia gas.
Give reasons for the following :
In the fountain experiment to demonstrate the high solubility of HCl gas in water, dry HCl gas is filled in the round bottom flask.
Give reasons for the following :
Hydrogen chloride gas fumes in moist air but hydrogen sulphide gas does not.
Complete the statements given below using the correct word/s
- An aqueous solution of HCl gas is named …………… [aqua fortis / muriatic acid / oil of vitriol]
- The salt obtained when rock salt reacts with conc. H2SO4 at temperatures below 200°C is a/an …………… [acid/normal] salt.
- In the preparation of HCl acid from HCl gas, a funnel arrangement provides …………… [less/more] surface area for absorption of the gas.
- The ions which impart acidic properties to an aqueous solution of hydrogen chloride are …………… [chloride/hydrogen/hydronium]
- The indicator which does not change colour on passage of hydrogen chloride gas is …………… [moist blue litmus / phenolphthalein / methyl orange].