Question

- Part A Consider the set of compounds, NH3, HF, and H20. Rank these compounds in order of decreasing acidity, Rank compounds from strongest acid to weakest acid. To rank items as equivalent, overlap them. Reset Help The correct ranking cannot be determined. Submit Request Answer Pad

Answer 1

A. HF > H2O > NH3

B. Moving from left to right in the periodic table size of an atom remains almost same. But electronegativity of the element increases significantly. As chlorine is highest electronegative and nitrogen is least electronegative among the given compounds. Now if hydrogen is attached to the high electronegative element then the polarisation will be high and donation of H+ Ion will be more while if the electronegativity difference between hydrogen and nitrogen is less than the purity will be less and donation of H+ Ion will be low.