Question

Y OVER 5. Write the conjugate base of TO a. H2O b. HNO2 C. HCN d. HCO3 e. NHA 6. Write the conjugate acid of a. H2O b. HSO3 C. CO32- d. OH e. NH3 7. Give 5 examples of strong acids. 8. Give 5 examples of strong bases. 9. what are the most common weak acids?

Answer 1

Answer:

(5) The conjugate base is removal of proton, H^+ from an acid.

Here (a) H2O is neutral molecule.

(b, c) HNO2 and HCN are weak acids.

(d) HCO3^- is conjugate base of H2CO3.

(e) NH4^+ is conjugate acid of NH4OH.

Therefore option (d) is correct.

(6) Conjugate acid is adding a proton, H^+ to a base

Here (a) H2O is neutral,

(b) HSO3^- it is conjugate acid. Here the base is SO3^-2.

(c) CO3^2- is conjugate base,

(d) OH^- also base

(e) NH3 is weak base.

So the option (b) is correct.

(7) The strong acids are

(a) Hydrochloric acid (HCl)

(b) Hydroiodic acid (HI)

(c) Nitric acid (HNO3)

(d) Perchloric acid (HClO4)

(e) Chloric acid (HClO3)

(8) (a) Lithium hydroxide (LiOH)

(b) Sodium hydroxide (NaOH)

(c) Potassium hydroxide (KOH)

(d) Calcium hydroxide (Ca(OH)2)

(e) Barium hydroxide (Ba(OH)2)

(9) Most common used weak acids are

(a) Acetic acid (CH3COOH)

(b) Nitrous acid (HNO2)

(c) Hydrofluoric acid (HF)

(d) Phosphoric acid (H3PO4)

(e) Formic acid (HCOOH)

Please let me know if you have any doubt. Thanks