More On Strong/weak Acids And Protein

Question 1

Water is involved in acidity and alkalinity what can it split into?

Answer 1

Water can split into acidic part and alkaline part

Acids form H+ ions when they dissolve in water

A H+ ion is a hydrogen atom that has lost its electron

Question 2

Explain strong and weak?

Answer 2

HCI-H+-CI-

Strong - 100% ions are released when it hits water

Weak - not all become ionised e.g.- Ethanotic acid (CH3COOH)
- Citric acid

CH3CHOOH-CH3COO-+H+
Weak PH will be weak

Question 3

What is PH the measurement ?

Answer 3

PH is the measurement of the concentration of hydrogen ions in a solution

[H+] means concentration molecule 3 read this as LOG to the base 10

Suppose you had to work out the PH of 0.1 mol dm3 hydrochloric acid

• LOG(3.2x10-9)=8.494 PH
• POH= -LOG10 [OH+]
• PKA=-LOG 10 KA
  4. 2 - LOG (4.2 x 10-3)=

Question 4

How can you speed up a chemical process?

Answer 4

• More enzymes
• Catalyst less energy
• Temp
• lower activation barrier

Coupling reactions speeds up process more efficient