Question

what (NH3/NH4) ratio is required for buffer that has pH=7.00?​

Answer 1

Answer:

For pH=7.00 :

Add 29.1 ml of 0.1 molar NaOH to 50 ml 0.1 molar potassium dihydrogen phosphate. Alternatively : Dissolve 1.20g of sodium dihydrogen phosphate and 0.885g of disidium hydrogen phosphate in 1 liter volume distilled water.