please can you explain this exercise step by step

thank you

Which of the compounds above are strong enough acids to react almost completely with a aydroxide ion (pK2 of H2O=15.74) or with a bicarbonate ion (pK, of H2COO3=6.37). Enter voier answors as an alphabetized string. to. abc, not cba; enter none if none of the coinpoinds are strong enough acidn. Ilytroxide ion: Bicarbonate ion: ites attermets thinuining