Chapter 2

Question 1

what is the difference between a buffer and non-buffer?

Answer 1

Buffers: Resist large and abrupt swings in the pH of body fluids by releasing H+ when the pH begins to rise and by binding H+ when the pH drops.
Non-buffer:

Question 2

What is the normal PH range?

Answer 2

PH 7.35-7.45

Question 3

What happens if someone or something has a PH of 1?

Answer 3

Death or increase of acidicy

Question 4

Which is the buffer: HCI, pH of H20 tube or pH of NaHCO3 tube?

Answer 4

NaHCO3 is the buffer

Question 5

What is the difference between the pH changes of the acid added to water versus the pH change of the acid added to the buffer?

Answer 5

The non-buffer (h20) didn’t do any “buffering”. Also the NaHC03 gradually changed with each drop of HCI

Question 6

Why did the buffer bubble or fiz?

Answer 6

A chemical reaction occured

Question 7

What happened to the HCI when you added it to the buffer?

Answer 7

The pH continuously declined but in a slower rate than the non-buffer.

Question 8

Why did the pH chnage less on the buffer side versus the water side?

Answer 8

Because the buffer is made to resist significant changes, as for the water, it doesn’t have a buffer to neutralize it, so it will have a significant change in pH.

Question 9

Why would the buffer suddently stop buffering if you were to keep adding drops of HCI?

Answer 9

Because the buffer would be overwhelmed and can only decrease to a pH of 1.

Question 10

What can you conclude about the nature of buffers?

Answer 10

Buffers are crucial and play a big role in maintaining the stability of pH.

Question 11

what does pH stand for?

Answer 11

Power if Hydrogen

Question 12

H+ > OH- means?

Answer 12

Acidic pH

Question 13

H+ < OH- means?

Answer 13

Basic pH

Question 14

2 basic types of chemical reactions?

Answer 14

1. Synthesis reaction
2. Decomposition reaction