Frequently Asked Questions about HCN (Hydrogen Cyanide)

Is HCN (Hydrogen Cyanide) an Acid or Base?

HCN (Hydrogen cyanide) is an acid. Going by definitions, a substance that releases H+ (hydrogen-ion) in aqueous solution is an acid according to Arrhenius theory. Since HCN does so and it is capable of donating a proton, it is considered an acid. The amount of released H+ (hydrogen-ion) is small. Thus, HCN is labeled as a weak acid.

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Is HCN a Strong or Weak Acid?

HCN (Hydrogen cyanide) is a weak acid. According to theories, any acid that dissociates partially in aqueous solution is classified as a weak acid. Because the dissociation of HCN is partial in aqueous solution, it is a weak acid too. It releases a very small amount of hydrogen-ion in water.

What is HCN (Hydrogen Cyanide) commonly used for?

HCN (Hydrogen cyanide) is used in gold and silver mining. It is also used for electroplating metals. You will see its use in the making of plastic, synthetic fibers, dyes etc. In addition, it is an ingredient of pesticides. That way, it plays an important role in the food production system.

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