how to pepare 6.8 pH phosphate buffer

Answer Posted / dinesh

Add 6.8 gm KH2PO4 and about 0.94 gm NaOH in 1000mL Water.
It directly shows pH 6.8.
Adjust the pH of solution by using dilute Orthophosphoric
acid or NaOH.

6.8gm KH2PO4 + 0.94gm NaOH

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