Very hard Chemistry problem please help please provide right anwser with bolded
ID: 496199 • Letter: V
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Very hard Chemistry problem please help please provide right anwser with bolded anwsers thank you so much!
The flask shown here contains 0.353 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.160 M NaOH (the baase of solution went down to 10 in buret makinf solution in flask turn pink)
A Sapling Learning Map The flask shown here contains o.353 g of acid and a few drops mL Reset hthalein indicator dissolved in water. The buret contains 0.160 M NaOH. mL What volume of base is needed to reach the end point of the titration? Number E- 35 mL base 40 E 45 Assuming the acid is monoprotic, molar mass? Add base to the solution until Number it just turns pink. You may need to reset the titration if g/ mol you go past the end point. no ® Give up & View solulion Check Answer ONext Exu PreviousExplanation / Answer
1)
volume of base needed = 10 mL
2)
At end point of titration :
moles of acid = moles of base
moles of acid = 10 x 0.160 / 1000
= 1.6 x 10^-3 mol
moles = mass / moalr mass
1.6 x 10^-3 = 0.353 / molar mass
molar mass of acid = 221 g/mol
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