pH curves and titrations

Question 1

How do you use a pH meter

Answer 1

Have a probe with a bulb on the end, and a digital dispaly

Question 2

Calibrating the pH meter

Answer 2

Place the bulb of the pH meter into distilled water and allow the reading to settle
Adjust to 7
Repeat with a standard solution of ph 4 and 10

Question 3

What is the endpoint/ equivalence point on pH curves

Answer 3

The vertical point
H+ and OH- are equal to each other
NEUTRALISATION

Question 4

at the end point, what does Ka = and what does pKA equal

Answer 4

Ka= H+
pKa= pH

Question 5

Indicator for… Strong acid/strong base

Answer 5

Phenophalein and methyl orange

Question 6

Indicator for.. strong acid and weak base

Answer 6

Methyl orange

Question 7

Weak acid/ strong base

Answer 7

Phenophalein

Question 8

indicator for weak acid adn weak base

Answer 8

No sharp ph change ,neither

Question 9

Low vs high pH for phenophalein

Answer 9

Colourless low

PInk for high

Question 10

Low vs High pH for methyl orange

Answer 10

Red for low

Yellow for high

Question 11

What are indicators

Answer 11

Have different colloured conjugate pairs to thier weak acid