Sodium hydrogen carbonate (NaHCO_3) also known as sodium bicarbonate or \"baking

Question

Sodium hydrogen carbonate (NaHCO_3) also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid (HCl) , which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO_3 neutralizes excess HCl through this reaction: HCl(aq) + NaHCO_3(aq) rightarrow NaCl (aq) + H_2 O(l) + CO_2(g) The CO_2 gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a woman suffering from indigestion can be considered to be 100. mL of a 0.083 M HCl solution. What mass of NaHCO_3 would she need to ingest to neutralize this much HCl ? Round your answer to 2 significant digits.

Explanation / Answer

     HCl              +    NaHCO3    ------>   NaCl    + CO2 + H2O

100x0.083

8.3 millimoles

So to neutralise the 8.3 millimoles of HCl we need,Equal millimoles of NaHCO3,ie 8.3 milimoles are needed

Mass of NaHCO3    = 8.3 x 84 =697.2 milligrams

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