I need a full answer for self-test 4.4 EXAMPLE 4.4 Differentiating acidities in

Question

I need a full answer for self-test 4.4

EXAMPLE 4.4 Differentiating acidities in different solvents Which of the solvents given in Fig. 44 could be used to differentiate the acidities of HCI (pk, -6) and HBr (pK,-97 Answer We need to look for a solvent with an acid-base discrimination window between -6 and -9. The only solvents in the table for which the window covers the range -6 to -9 are methanoic (formic) acid HCOOH, and hydrofluoric acid, HF Selftest 4.4 Which of the solvents given in Fig 4.4 could be used to discriminate the acidities of PH, (pK, 27) and GeH, (pK25)?

Explanation / Answer

Going by the explaination given in the example, we can see that only DMSO and NH3 are covering the entire range of the given pKa values. Hence they should be the answer.

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