Which is more acidic KH2PO4 or K2HPO4?

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With the addition that K2HPO4 is more alkaline than KH2PO4, therefore the effect of pH increase is more pronounced for K2HPO4.

What is the difference between K2HPO4 and KH2PO4?

The key difference between KH2PO4 and K2HPO4 is that KH2PO4 is monobasic and can release a low amount of potassium whereas K2HPO4 is dibasic and can release a high amount of potassium when used in fertilizer. The terms monobasic and dibasic refer to the number of potassium cations bound to the phosphate molecule.

Is K2HPO4 a strong acid?

Make two 5 mM solutions, one of the K2HPO4 (dibasic potassium phosphate) and one of the KH2PO4 (monobasic potassium phosphate). The pH of the dibasic solution will be alkaline (around pH 8), and the monobasic solution will be weakly acidic (around 6.5, maybe 6.8).

Is KH2PO4 a buffer?

Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, KDP, or monobasic potassium phosphate), KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion. It is a source of phosphorus and potassium as well as a buffering agent.

What are the ions in K2HPO4?

Answer and Explanation: The cation in K2HPO4 K 2 H P O 4 is potassium K+ , while the anion is hydrogen phosphate. Since the total charge of two potassium ions is 2+ and the net charge of the compound is 0, the charge of hydrogen phosphate is 2- and its formula is HPO2−4 H P O 4 2 − .

Can I use KH2PO4 instead of K2HPO4?

If use mono-potassium phosphate, your prepared media will be more acid (pH<6.8). It is obvious that using KH2PO4 as an alternative for K2HPO4, you will obtain a slightly acid media that will be most probable harmful for the interest microorganisms.

What K2HPO4 called?

Dipotassium phosphate (K2HPO4) is a highly water-soluble salt often used as a fertilizer and food additive as a source of phosphorus and potassium as well as a buffering agent.

What is the pKa of phosphate buffer?

Phosphate acts best as a buffer in the reqions of pH near its three pK’s: pK1 = 2.12, pK2 = 7.21; and pK3 = 12.44.

What is the molar mass of K2HPO4?

174.2 g/molDipotassium phosphate / Molar mass