138. Solving a chemistry problem
- Price in currencies:
- 1.16 $ · 111 RUB · 0.99 €
- Category:
- Coursework
- Item:
- 81.rar (10.3 KB)
- Uploaded:
- 19.05.2022 14:43:20
- Sales:
- 0
- Refunds:
- 0
- Seller:
- Derkach · about the seller and their products
DESCRIPTION
138. Solving a chemistry problem
81. A portion of the siderite mineral equal to 0.9938 g is dissolved and brought in a volumetric flask to a volume of 20 cm3. For the titration of iron ions, previously reduced to Fe2 for 50.00 cm3 of this solution, 20.50 cm3 of a KMnO4 solution with T KMnO4 / Fe = 0.005861 g / cm3 is spent. Determine the mass fraction of iron.
REVIEWS
Reviews: (0)
No customer reviews yet.