Question

Give the name and formula for the acid derived from each of the following anions: (a) hydrogen carbonate (b) IO-4 (c) cyanide (d) HS-

Answer 1

The acid derived from each given anion and their formulas are carbonic acid (H2CO3), periodic acid (HIO4), hydrocyanic acid (HCN), and hydrosulfuric acid (H2S).

Step-by-step explanation:

a. The acid derived from hydrogen carbonate is called carbonic acid. Its formula is H2CO3.

b. The acid derived from IO-4 is called periodic acid. Its formula is HIO4.

c. The acid derived from cyanide is called hydrocyanic acid. Its formula is HCN.

d. The acid derived from HS- is called hydrosulfuric acid. Its formula is H2S.

Answer 2

Name and formula for the given acids are written below.

Step-by-step explanation:

Add
`H^(+)` ions to each bases until it becomes neutral. This neutral form is the parent acid of the given conjugate bases.

a)
`HCO_(3)^(-)+H^(+)\rightarrow H_(2)CO_(3)`

`H_(2)CO_(3)` ( carbonic acid)

b)
`H^(+)+IO_(4)^(-)\rightarrow HIO_(4)`

`HIO_(4)` (periodic acid)

c)
`H^(+)+CN^(-)\rightarrow HCN`

HCN (hydrogen cyanide)

d)
`H^(+)+HS^(-)\rightarrow H_(2)S`

`H_(2)S` (hydrogen sulphide)