Title | Acidez vinagre1 314 342343 |
---|---|
Author | MIGUEL CARDOZO |
Course | Histología |
Institution | Universidad Autonoma de Chiriqui |
Pages | 2 |
File Size | 49 KB |
File Type | |
Total Downloads | 41 |
Total Views | 161 |
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6. calcular el pocentraje de acidez (%, m/v, expresado como acido acetico) en las 3 muestras .
Muestra 1
cantidad de acido acetico 0.0242 L NaOH ∗
0.5 mol =0.0121mol NaOH 1L
0.0121 mol NaOH ∗
1 mol CH 3COOH =0.0121 mol CH 3 COOH 1 mol NaOH
0.0121 mol CH 3 COOH ∗
60 g Ac =0.726 g 1 mol
% m/v 0.726 g ×100 %=3.63 % 20 mL % de acidez 100 mL ×0.363 %=3.63 g=3.63 %
Muestra 2
0.0301 L NaOH ∗
0.5 mol =0.0151mol NaOH 1L
0.0151 mol NaOH ∗
1 mol CH 3COOH =0.0151 mol CH 3 COOH 1 mol NaOH
0.0151 mol CH 3 COOH ∗
60 g Ac =0.906 g 1 mol
% m/v 0.906 g ×100 %=4.53% 20 mL % de acidez 100 mL × 4.53 %=4.53 g=4.53 %
Muestra 3
0.0333 L NaOH ∗
0.5 mol =0.01665 mol NaOH 1L
0.01665 mol NaOH ∗
1mol CH 3 COOH =0.01665 mol CH 3COOH 1mol NaOH
0.01665 mol CH 3 COOH ∗
60 g Ac =1 g 1 mol
% m/v 1g ×100 %=5 % 20 mL % de acidez 100 mL ×5 %=5 g=5 %
grado de acidez de un vinagre se expresa como los gramos de ácido acético contenidos en 100 mL de dicho producto. https://vinagresparras.com/noticias/21_QUE-ES-LA-ACIDEZ-DEL-VINAGRE...