
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

hydrochloric acid

3 pages, 1 questions, 1 questions with responses, 1 total responses,

$ω@T!*
Ashoka Universal School (AUS), Nashik
11th-12th

+Fave Message

Profile Timeline Uploads

Home > swati22 >

Formatting page ...

Hydrogen Chloride Gas and Hydrochloric acid 1. Hydrogen chloride gas is prepared in the laboratory by heating concentrated sulphuric acid with sodium chloride. without heating NaCl + H2SO4 NaHSO4 + HCl heat NaHSO4 + NaCl Na2SO4 + HCl 2. Concentrated hydrochloric acid is prepared by dissolving HCl gas in water by connecting delivery tube to an inverted funnel whose rim is dipped in water. This kind of apparatus prevents back suction. HCl gas stops dissolving in water when concentration of gas by weight in water is 36%. It is also called constant boiling mixture for the simple reason that any gas passed through 36% acid will bubble out. 3. Physical properties of HCl gas : (i) It is a colourless gas which fumes strongly in air. (ii) It is heavier than air (V.D. 18.25) and is extremely soluble in water. (iii) It has a sharp pungent smell. (iv) It has a sour taste. 4. Physical Properties of hydrochloric acid : (i) It is a colourless volatile acid which fumes strongly in air and smells exactly like HCl gas. (ii) Conc. hydrochloric acid contain 36% HCl gas by weight. (iii) It causes painful blisters on the skin. (iv) It marks the skin or wooden splint brown. 5. Chemical properties of hydrochloric acid : 1. It turns blue litmus red, methyl orange pink and phenolphthalein solution colourless and hence is acidic in nature. 2. It reacts with metallic oxides to form metallic chlorides and water. CuO + 2HCl (dil.) CuCl2 + H2O 1 Key Points

Formatting page ...

Top Contributors
to this ResPaper
(answers/comments)

Just Unique
(1)

Formatting page ...

swati22 chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: