2. Imagine that you need to perform three titrations (a, b, & c) and you need to

Question

2. Imagine that you need to perform three titrations (a, b, & c) and you need to determine the appropriate indicator(s) to use. Choose the appropriate indicator(s) for each titration and give a brief explanation for your answer. You have the indicators in Table 1 available (they may be used more than once or not at all). (12 points) a. Sodium hydroxide (NaOH) with nitric acid (HNO3) b. Sodium carbonate (NaCO3) with hydrochloric acid (HC1) c. Boric acid (H3B03) with sodium hydroxide (NaOH) Table 1: Indicators Indicator HIn 1n pKa Terpel Purple Red Blue 4.2 Maryland Red Yellow Red 7.4 Terrapin Yellow Red Colorless 10.7

Explanation / Answer

b) Maryland Red

c)Terpel Purple

a)terpel purple

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