Which Indicator Would Be the Best to Use If 0

question 7

Multiple Choice

Which indicator would be the best to use if 0.050 M benzoic acid (K_a = 6.6 × 10^-5) is titrated with 0.050 M NaOH?

• A) bromphenol blue, pH range: 3.0 - 4.5
• B) bromcresol green, pH range: 3.8 - 5.4
• C) alizarin, pH range: 5.7 - 7.2
• D) phenol red, pH range: 6.9 - 8.5

Describe the properties of water as a solvent and the role of solvation in dissolving ionic compounds.

Distinguish between strong and weak acids based on their ionization in water.

Understand the principle of chemical buffers and their role in maintaining pH balance in solutions.

Explain the use of radioisotopes in tracing biological processes and their mechanism of action.

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