I need some help with my post lab questions, Despite measuring 2.5 mmol of each
ID: 877161 • Letter: I
Question
I need some help with my post lab questions, Despite measuring 2.5 mmol of each basic compound, some of the bases studied are able to neutralize more acid than others. explain how the stoichiometry of a compound affects an antacids ability to neutralize excess stomach acid. I need some help with my post lab questions, Despite measuring 2.5 mmol of each basic compound, some of the bases studied are able to neutralize more acid than others. explain how the stoichiometry of a compound affects an antacids ability to neutralize excess stomach acid. I need some help with my post lab questions, Despite measuring 2.5 mmol of each basic compound, some of the bases studied are able to neutralize more acid than others. explain how the stoichiometry of a compound affects an antacids ability to neutralize excess stomach acid.Explanation / Answer
Neutralization reaction:
H+(aq) + OH-(aq) = H2O(l)
In neutralization reactions, one mole of H+ ions is neutralized by one mole of OH- ions
The number of moles of OH- ions, a base will furnish for neutralization depends upon the acidity of the base (the number of OH- ions present in one molecule of the base)
NaOH and KOH are mono acidic bases
Ca(OH)2 is a di acidic base
Al(OH)3 is a tri acidic base
CaCO3 is a base which does not contain OH- group. 1 mole of CaCO3 reacts with 2 moles of a monobasic acid like HCl. Hence it is a dibasic acid.
1 mole of a mono acidic base like NaOH and KOH will neutralize i mole of H+ ions
1 mole of a di acidic base like Ca(OH)2 and CaCO3 will neutralize 2 moles of H+ ions
1 mole of a tri acidic base like Al(OH)3 will neutralize 3 moles of H+ ions
THE BASES WHICH ARE ABLE TO NEUTRALIZE MORE ACID THAN OTHERS ARE POLY ACIDIC( DI, TRI etc. ACIDIC) BASES.
THE GREATER THE ACIDITY OF A BASE, GREATER IS ITS ABILITY TO NEUTRALIZE EXCESS STOMACH ACID.
THAT IS THE REASON WHY Al(OH)3 WITH 3 OH - GROUPS IS A POWERFUL AND POPULAR ANTACID