Which of the Following Indicators Would Be the Best to Use

question 100

Multiple Choice

Which of the following indicators would be the best to use when 0.050 M benzoic acid (K_a = 6.6 × 10⁻⁵) is titrated with 0.05 MNaOH?

• 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: 6.9-8.2
• E)Phenolphthalein, pH range: 8.0-10.1

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Definitions:

Hormone

Chemical substances produced in the body that regulate and control the activity of certain cells or organs.

Renin

Enzyme released by the kidneys that leads to the secretion of aldosterone and a rise in blood pressure.

Urethra

A duct through which urine is discharged from the bladder to the exterior of the body in both males and females, and through which semen is discharged in males.

Reproductive System

Organ system in humans that includes the sex-specific organs (testes, ovaries, etc.); produces and transports gametes; in females, nurtures and gives birth to offspring.