Progress test 2

Question 1

Kc expression.

Answer 1

products/reactants

Question 2

When does K change.

Answer 2

Temperature.

Question 3

What happens to K w/ exothermic.

Answer 3

k decreases when temp increases
left
lower eq yield of products

Question 4

What happens to k w. endothermic.

Answer 4

increases when temp increases
eq yield of products increases
Right.

Question 5

pH calculation.

Answer 5

-log(H+)

Question 6

H+ concn calculation.

Answer 6

10^-pH

Question 7

Ka expression.

Answer 7

(H+)(A-)/(HA)

Question 8

Ka and pKa values for a strong acid.

Answer 8

High Ka
Low pKa

Question 9

How to calculate strong acids.

Answer 9

Use Ka
pKa=-log(ka)
Ka=10^-pKa

Question 10

Calvulation of weak acids

Answer 10

Ka= (H+)^2/(HA)
H+=square root of Ka(HA)
Kw=(H+)(OH-)
1x10^-14.