(Solved): Reference table of fruit iuice standards: 1) Which dominant acid should be used to express the titr ...

Reference table of fruit iuice standards: 1) Which dominant acid should be used to express the titratable acidity for the following juice samples? a. Apple b. Lemon c. Tomato d. Passionfruit 2) Tartaric acid $(\mathrm{Mr}=150.09\mathrm{g}/\mathrm{mol})$ is a diprotic acid. The stoichiometric ratio is thus $1\mathrm{mol}$ tartaric acid to $2\mathrm{mol}$ sodium hydroxide. What is the calculated tartaric acid result in terms of $\mathrm{g}/\mathrm{L}$ tartaric acid if $10\mathrm{mL}$ of sample was reacted with $7\mathrm{mL}$ of $0.1005\mathrm{M}\mathrm{NaOH}$ ? Give your answer to 1 decimal place. 3) Citric acid (Mr of $192\mathrm{g}/\mathrm{mol}$ ) is a triprotic acid. What would the result be for this acid for the same titration sample as above? 4) A student wrote down the titratable acidity as $7.2\%$ citric acid for a grapefruit sample. Why was this answer deemed to be incorrect and what would the correct answer be? Give both reported forms. 5) Could a sample which has been determined to contain $1.5\mathrm{g}/\mathrm{L}$ acetic acid also be described as containing $1.5\mathrm{g}/\mathrm{L}$ malic acid? Explain why or why not.