【Daily Question】2018.8.27

2018-08-27View Original

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Multiple-choice question: Which of the following ( ) solutions are standard solutions used for pH measurement? A. 0.05 mol·L-1 C8H5O4K B. 1 mol·L-1 HAc + 1 mol·L-1 NaAc C. 0.01 mol·L-1 borax D. 0.025 mol·L-1 KH2PO4 + 0.025 mol·L-1 Na2HPO4 ACD

Reply #22018-08-27

D、0.025 mol·L-1 KH2PO4 + 0.025 mol·L-1 Na2HPO4

Reply #32018-08-27

D、0.025 mol·L-1 KH2PO4 + 0.025 mol·L-1 Na2HPO4

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【Daily Question】2018.8.27

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