Pernodic Table Gradebook 10 of 12 Sapling Learning of here g of a drops phenolph

Question

Pernodic Table Gradebook 10 of 12 Sapling Learning of here g of a drops phenolphthalein indicator dissolved in water. The buret contains 0.320 M NaOH. 25 10 What volume of base is needed to reach the end point of the titration? 25 Number 29 mL base What is the molar mass of the acid (assuming it is diprotic and that the end point corresponds to the second equivalence point? Add base to the solution until it just turns pink. You may need to reset the titration if you go past the end point. 132.2 g/ mol There is a hint available! View the hint by clicking on the bottom divider bar. Click on the divider bar again to hide the hint. Previous CB Give Up & View Solution 2 Check Answer 0 Next Ext about us careers partners privacy policy terms of use contact us help O Assign Points Po Descriptio Policies: You can c O eTextbo o Help Wi O Web He O Technic

Explanation / Answer

Volume of Base used = 29 ml [Fron Buret]

Moles of base = Volume * molarity = 0.029 * 0.32= 0.00928

Moles of acid = Moles of base = 0.00928

Molecular weight = Mass / Moles = 0.429 g /0.00928 = 46.22 g/mol

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