How many molecules?

Chemistry Level 1

How many sulfuric acid ( H X 2 S O X 4 \ce{H2SO4} ) molecules are needed to completely neutralize 100 hydroxyl ions O H X − \ce{OH-} ?

50 75 100 200

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Lakshan Dumpa by Lakshan Dumpa , 24, India

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1 solution

Shantanu Lankr
May 13, 2014

Since sulfuric acid is a diprotic acid, one molecule neutralizes two hydroxyl ions. Therefore, in order to neutralize 100 OH- ions, we need 50 molecules of H2SO4

6 Helpful 0 Interesting 1 Brilliant 0 Confused

The two protons of H2SO4 are not completely available for the acid-base reaction, provided that: H2SO4 + OH-> HSO4- + H2O HSO4- + OH-> SO42- + H2O And SO42- undergoes hydrolysis according to: SO42- + H2O-> HSO4- + OH- Therefore, it is possible to state that the ratio of H2SO4 to OH- is [1: 1], considering that HSO4- is a weak acid and undergoes hydrolysis.

Tibrôncio Cavalcante - 4 years, 3 months ago

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