Hydrocyanic Acid: Overview, Questions, Preparation

• Have a bitter almond smell in it
• Having a pale blue appearance 
• Have a covalently bond unit as 2
• Having heat capacity of 35.9 J K−1 mol−1
• Hydrogen bond donor as 1
• Miscible in water and ethanol

• Hydrocyanic corrosive responds with a base like sodium hydroxide structures sodium cyanide and water. The synthetic condition is given underneath. 

                                                            HCN + NaOH → NaCN + H2O 

• Hydrocyanic corrosive responds with potassium hydroxide structure, potassium cyanide, and water. The synthetic condition is given underneath. 

                                                             HCN + KOH → H2O + KCN

• Utilized as a fragment to execute nuisances, for example, rodents in stockrooms, grain stockpiling containers, nurseries, and holds of boats where its high harmfulness and capacity to enter dark spaces are invaluable. 

• Utilized in the production of cyanide salts, acrylonitrile, and colors. It is likewise utilized as a plant fumigant. 

• Utilized as a profoundly important forerunner in the creation of a few synthetic substances.

Occurrence: HCN can be obtained from fruits with holes, such as cherries, apricots, apples, and bitter almonds, from which almond oil and seasoning are made. Many of these holes contain small amounts of cyanohydrin such as mandelonitrile and amygdalin, which slowly releases hydrogen cyanide. One hundred grams of crushed apple seeds can produce around 70 mg of HCN. Some milpedia releases hydrogen cyanide as a defense mechanism, like certain insects, like some burnet moths.

In this class 11, the hydrocyanic acid has been discussed in the chapter on equilibrium, with its formula, reactions with other multiple compounds, and its properties.

The chapter has a weightage of 20 Marks.

1. Give the reaction between aqueous hydrocyanic acid and aqueous sodium hydroxide

Answer: HCN(aq) + OH^-(aq) ---> H2O(l) + CN^-(aq)

HCN is written in a sub-atomic manner since it is a feeble corrosive and ionizes just a limited quantity. NaOH, then again, is a solid electrolyte, ionizing 100% in the arrangement. The Na^+ is an observer particle, so it is not written in the net ionic condition.

2. Give the reaction between hydrocyanic acid and ammonia.

Answer: HCN(aq) + NH3(aq) → ← NH4+(aq) + CN–(aq)

3. Give the reaction between hydrocyanic acid and hydrogen

Answer: H+ + NaCN → HCN + Na+

Q: How can we say that hydrocyanic acid is very poisonous in nature?

Q: For what reason do we use hydrocyanic acid?

Q: How strong is hydrocyanic acid?

Q: Can we say that HCN is better than water in acidity?

Q: What acid is stronger HF or HCN?