Question 5 10 pts Indicator Alizarin yellow R Yellow Violet Colorless Blue Color

Question

Question 5 10 pts Indicator Alizarin yellow R Yellow Violet Colorless Blue Colorless Red Thymol blue (base range) Phenol red Yellow Red Yellow Blue Bromthymol blue Chlorphenol red Bromcresol green Methyl orange Bromphenol blue Yellow Red Yellow Blue Red Yellow-orange Yellow Blue-violet Yellow Thymol blue (acid range) Methyl violet Red Yellow Violet Which of the following acid-base indicators can be used for a titration of NaOH with 0.100 M HCI? (see ranges in Table 11-3 of the book) Bromocresol green Any of this would yield similar results Methyl red Litmus Phenolphthalein

Explanation / Answer

Phenolphthalein is best for titration of NaOH and HCl it gives no colour in acidic solutions and gives pink colour in basic conditions(solutions).at equivalent point it can change colour only by single drop (0.05 ml)of titrant taken in burrete.

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