tan is located on the filter paper, ensuring that washed, baked and weight. From then calculate impurity content.
3.3.2.2. Proceed.
Nung sample to white ash (ash whole), taken out to cool, add 30 ml of HCl 10%.
Bring a water bowl ash for 30 minutes.
Filter through filter paper remains, wash the residue on the filter with boiling distilled water until water no longer Cl (check with AgNO3 10%).
Put a paper filter in the crucible over, firing in furnace at 5500C until constant weight. Get off to cool in a desiccator and weigh.
3.3.2.3. Count results.
impurity content% calculated by the formula:
X = (m2m0 / m1m0) .100 (%)
Of which:
m0: mass of the crucible
m1: mass of the cup + sample before calcination (g )
m2: The weight of the cup + impurities after firing (g)
3.4.1. Reducing sugar.
Sugar is sugar reduction with reducing properties of their molecules that contain aldehyde group, or the group - OH glucozid. For example, glucose,
is completed
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