Zinc sulfate monohydrate is a colorless, odorless, colorless or white crystal, granule or powder. We all know that any solution needs the correct configuration. So let's take a look at the configuration standard of zinc sulfate monohydrate:
1. Preparation of standard solution of zinc sulfate monohydrate: First weigh 4.3977g of ZnSO4 · 7H2O, dissolve it in water, transfer it to a 1L volumetric flask, shake it to a constant volume, and obtain a solution containing 1mg / mL zinc.
2. This zinc-containing solution does not need to be calibrated. Generally, 4.40g can be weighed.
3. Calibration volumetric flask is required to be higher. Weigh it with standard zinc oxide: burn zinc oxide at 800 ° C for 1 hour, cool and weigh, and let it dissolve in 100mL (1 + 100) sulfuric acid solution, transfer Into a 1L volumetric flask, shake to constant volume to obtain a solution containing 1 mg / mL zinc.