138. Solving a chemistry problem
Seller: Derkach
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Product description
- The titration of 25.00 cm3 of 0.1 n KMnO4 solution with F = 0.9185 requires 35.11 cm3 of sodium nitrite solution obtained by dissolving a weighed portion of 1.3074 g of this substance in 500 cm3 of the solution. What percentage of sodium nitrite is in the specified sample?