Acid and Base properties

Question 1

Strong acid

Answer 1

completely dissociates into ions in an aqueous solution.

produces many OH- ions

Question 2

high concentration of H3O+ ions

Answer 2

1. high electrical conductivity (indicates large number of charged particles to conduct current)
2. low PH
3. a greater number of effective collisions per second. Resulting in fast rate of reaction

Question 3

weak acid

Answer 3

only partially dissociates into ions in an aqueous solution

results in a low concentration of ions

Question 4

low concentration of H3O+ ions

Answer 4

1. a low electrical conductivity
2. higher pH
3. slow rate of reaction

Question 5

Diluting acid results in…

Answer 5

less H3O+ ions per unit volume so pH increases

Question 6

concentrating an acid results in…

Answer 6

more H3O+ ions per unit of volume so pH decreases.

Question 7

A high concentration of OH- ions

Answer 7

means a high pH

Question 8

a low concentration of OH- ions means

Answer 8

a lower pH

Question 9

Amphiprotic substances

Answer 9

can act as either an acid (by donating protons) or as a base (by accepting protons)

Question 10

possible amphiprotic substances

Answer 10

H2O, HCO3-, HPO42-, HSO4-

Question 11

Electrical conductivity

Answer 11

charged particles (ions) that are free to move around