Proton Donor: Because a free H+ ion is technically a bare proton, acids are sometimes referred to as 'proton donors' because they release hydrogen ions in solution. The term 'proton donor' is misleading, since in aqueous solution, the hydrogen ion is never a bare proton- it's covalently bound to a water molecule as an H3O+ ion. Further, acids don't 'donate' protons; they yield them to bases with a stronger affinity for them.

 

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Proton Donor: Because a free H+ ion is technically a bare proton, acids are sometimes referred to as 'proton donors' because they release hydrogen ions in solution. The term 'proton donor' is misleading, . . . View Full Definition

Proton: A subatomic particle in the nucleus of an atom that carries a positive charge. The positively charged (+1) subatomic particle located in the atomic nucleus and having a mass slightly less th . . . View Full Definition

Donor: A nation's internal market representing the mechanisms for issuing and trading securities of entities domiciled within that nation. Compare external market and foreign market.