Cobaltous chloride CS (Red solution) (Mol. Formula: CoCl2.6H2O, Mol. Wt: 237.93) Reagents: Hydrogen peroxide TS: Pipette 10 mL of 30% hydrogen peroxide solution into a 100 mL volumetricflask, dilute to volume with purified water.
Sodium hydroxide solution (1 in 5) : Mix 10 g of sodium hydroxide with 50 mL of purified water. Dilute sulfuric acid (1 in 4) : Mix 10 mL of sulfuric acid with 40 mL of purified water.
General Testing Procedure, COLORIMETRIC SOLUTIONS, Standardization
Sodium hydroxide solution (1 in 5) : Mix 10 g of sodium hydroxide with 50 mL of purified water. Dilute sulfuric acid (1 in 4) : Mix 10 mL of sulfuric acid with 40 mL of purified water.
General Testing Procedure, COLORIMETRIC SOLUTIONS, Standardization
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