A person who overdoses on antacids may neutralize too much stomach acid which ca

Question

A person who overdoses on antacids may neutralize too much stomach acid which causes an imbalance in the bicarbonate equilibrium in their blood. 2H2O(l)+CO2(g)H3O+(aq)+HCO3(aq)

A) How does blood pH change when this occurs?

B) In which direction will the bicarbonate equilibrium shift during an Alka-Seltzer® overdose

C) To treat severe forms of this condition, patients are administered NH4Cl, which acts as a weak acid. How does this restore the bicarbonate equilibrium

D) In which direction will the bicarbonate equilibrium shift as the pH returns to normal?

Explanation / Answer

2H2O(l)+CO2(g) <----> H3O+(aq)+HCO?3(aq)

at equilibrium all the species are having a constant concentration.

A) if excess antacidis administered .it may reacts with H3O+ ions. so that

so that concentration of H3O+ decreases,

there fore pH increases.

B) if excess antacidis administered .it may reacts with H3O+ ions. so that

so that concentration of H3O+ decreases,that results shifting of equilibrium towards right side.

c) when NH4Cl administered,as it is weakacid.it may reacts with bicarbonate ion.so that equilibrium shifts

towards right side.that H3O+ concentration regeneration takes place.therefore pH will become constant.

D) right side.

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