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ID number:293520
 
Author:
Evaluation:
Published: 11.03.2015.
Language: Latvian
Level: Elementary school
Literature: n/a
References: Not used
Extract

1. Porcelāna bļodiņā nosver 3 gramus tauku!
2. Ar mērcilindru pielej 7-8 ml 20% NaOH šķīduma!
3. Ar pilināmo pipeti pielej ≈ 1,2 ml etilspirta!
4. Bļodiņu ar maisījumu ievieto statīvā, vāri 15-20 minūtes, maisot ar stikla nūjiņu un papildinot ūdeni līdz sākotnējam līmenim! 5. Vārīšanas beigās reakcijas masai pieber ≈ 0,5 gramus NaCl un vēl ≈ 2 minūtes vāri!

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