A 0.9550 g sample of ASA was dissolved in 40.1 mL of standard NaOH. The excess NaOH was neutralized using 18.1 mL of a standard HCI. Note that 1.0 mL of the standard acid is equivalent to 0.0273 g sodium carbonate and 1.0 mL of the standard base is equivalent to 0.1005 g KHP. MW: KHP = 204.22 Na2CO3 = 106.0 ASA = 180.16 ASA +NaOH + H,O `Na HO + NaOH + CH;COONa Na acetate `Na `Na Na Acetylsalicylate Na salicylate x'ss NaOH + HCІ NaCl + H2O The Normality of the STD. Base is The Normality of the STD. Acid is The weight of pure ASA in grams is ? ?

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A 0.9550 g sample of ASA was dissolved in 40.1 mL of standard NaOH. The excess NaOH was neutralized
using 18.1 mL of a standard HCI.
Note that 1.0 mL of the standard acid is equivalent to 0.0273 g sodium carbonate and 1.0 mL of the standard
base is equivalent to 0.1005 g KHP.
MW: KHP = 204.22 NazCO3 = 106.0 ASA = 180.16
ASA
+ NaOH
+H20
ÓH
Na
OH
+ NaOH
+ CH;COON
Na acetate
Na
Na
Na Acetylsalicylate
Na salicylate
х'ss NaOH + HCІ
NaCl + H,O
The Normality of the STD. Base is
The Normality of the STD. Acid is
The weight of pure ASA in grams is
The H of aspirin is
The % ASA in the sample is
?
?
?
Transcribed Image Text:A 0.9550 g sample of ASA was dissolved in 40.1 mL of standard NaOH. The excess NaOH was neutralized using 18.1 mL of a standard HCI. Note that 1.0 mL of the standard acid is equivalent to 0.0273 g sodium carbonate and 1.0 mL of the standard base is equivalent to 0.1005 g KHP. MW: KHP = 204.22 NazCO3 = 106.0 ASA = 180.16 ASA + NaOH +H20 ÓH Na OH + NaOH + CH;COON Na acetate Na Na Na Acetylsalicylate Na salicylate х'ss NaOH + HCІ NaCl + H,O The Normality of the STD. Base is The Normality of the STD. Acid is The weight of pure ASA in grams is The H of aspirin is The % ASA in the sample is ? ? ?
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