ALES-Tymor Abolson- Leex nurest 1oh-Googe Search x square root of o-Goe c Search

Question

ALES-Tymor Abolson- Leex nurest 1oh-Googe Search x square root of o-Goe c Search Ty Solving for a reactant in solution Sodium hydrogen carbonate (NaHCO,), 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 (HCI), which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO, neutralizes excess HCI through this reaction: HCI(aq) + NaHCO3(aq) Nacl(aq) + H,00) + CO2(g) The CO2 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 0.031 M HCI solution. What mass of NaHCO would she need to ingest to neutralize this much HCl ? Be sure your answer has the correct number of significant digits. 10P Explanation Check © 2018 McGraw-H Education. All Rights Reserved. Terms of Use '

Explanation / Answer

Solution:- The equation is-

HCl(aq) + NaHCO3 (aq) NaCl (aq) + H2O (l) + CO2 (g)

1 mole     1 mole

no of moles of HCl = molarity * volume in L

                            = 0.031*0.10

= 3.1*10^-3 moles

From balanced equation

1 mole of HCl reacts with 1 mole of NaHCO3

3.1*10^-3 mole of HCl react with3.1*10^-3 moles of NaHCO3

mass of NaHCO3 = no of moles of NaHCO3 * molar mass

                         =3.1*10^-3*84 = 0.2604gm

mass of NaHCO3 is 0.2604 gm

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