For pH= 4.00 : Add 0.1 ml of 0.1 molar NaOH to 50 ml of 0.1 molar potassium hydrogen phthalate . Alternatively : Dissolve 8.954g of disodium hydrogen phosphste. 12 H2O and 3.4023g of potassium dihydrogen phosphate in 1 liter volume distilled water.
What color is pH 4 buffer?
red
Is pH 4 buffer hazardous?
Not a dangerous substance according to GHS classification criteria. No known OSHA hazards.Sep 9, 2015