the flask shown here contains 0.744g of acid Sapling Learning The flask shown he
ID: 547818 • Letter: T
Question
the flask shown here contains 0.744g of acid Sapling Learning The flask shown here contains 0.774 g of acid and a few drops of phenolphthalein indicator di contains 0.190 M NaOH water. The buret What volume of base is needed to reach the end point of the titration? ml base Assuming the acid is monoprotic, what is its molar mass? Click to begih Add base to the solution until it just turns pink. You may need to reset the uitration if you go past the end point Number g/mol Previous Gve Up & View SoutionCheck Answer ONext MacBook Air F3 F5 F6Explanation / Answer
After you click on the simulated titration the base will be added to the solution, continue to
click until the solution turns pink and note that volume. This is the volume of base needed
to reach the end point of titration (Vb)
The acid is monoprotic, HX + NaOH ------> NaX + H2O
According to the stoichometry of the above reaction 1 mole of acid reacts with one mole
of NaOH
mol of base = (Vb / 1000)L* 0.190 mol/L = mol of acid
Molar mass of acid = 0.774 gm / mol of acid
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