Question

HF can act as a base in sulfuric acid and an acid in liquid ammonia. Write the balanced equations, with correct physical states, that represent these equilibria. Choose one of the two process and describe how it illustrates the solvent-system concept of acid-base chemistry.

Answer 1

Yest it the nature of the substances much depends upon the nature of the solvents in which the nature of the acid bas chnaged.

Much of the chemistry in liquid ammonia can be classified by analogy with related reactions in aqueous solutions. Comparison of the physical properties of NH3NH3 with those of water shows NH3NH3 has the lower melting point, boiling point, density, viscosity, dielectric constant and electrical conductivity; this is due at least in part to the weaker hydrogen bonding in NH3NH3 and because such bonding cannot form cross-linked networks, since each NH3NH3 molecule has only one lone pair of electrons compared with two for each H2O molecule..

Hydrogen fluoride react with sulfuric acid to produce fluorosulfuric acid and water.

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