Acid–Base Reaction (Double Replacement)

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Acid–Base Reaction(Double Replacement)

By Noah Carsten & Jennie Warrell

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Description

OAn acid-base reaction is a reaction thatinvolves an acid and a base whichproduces a salt and water because of theneutralization of the acid and baseproperties.

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Description

OThe acid releases H+ while the basereleases hydroxide OH- to produce waterand a salt.

HCl + NaOH  H2O + NaCl

Acid + base  water + salt

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Example #1Stomach Antacids

OAn antacid works by adding a base to thestomach which decreases the acidity of thehydrochloric acid within.

OTums Example:

Tums: CaCO3

Equation:

CaCO3(s) + HCl(aq)  CaCl2(aq) + CO2(g) +H2O(l)

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Example #2Baking Soda & Vinegar

OA basic chemistry experiment is adding baking sodaand vinegar together inside of a paper mache volcanoto replicate an eruption.

OThis reaction is caused by the acid (vinegar) and thebase (baking soda) causing a neutralization action. Thebubbling that forms is caused by the production ofcarbon dioxide.

HC2H3O2(aq) + NaHCO3(aq) 

NaC2H3O2(aq) + H2O(l) + CO2(g)

vinegar + baking soda 

Sodium acetate + water + carbon dioxide

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Balanced Equations

Stomach Antacids (Tums)

CaCO3(s) + 2HCl(aq)  CaCl2(aq) + CO2(g) +H2O(l)

Baking Soda & Vinegar

HC2H3O2 + NaHCO3  NaC2H3O2 + H2CO3

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Significance

OThe importance of acid-base reactions isto keep a neutral level within the pH scale.

OIf something is too acidic, it can becomebasic, and vice versa.

OAdditionally, it can lead to beneficialreactions and products.

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"Acid-Base Reactions." Acid-Base Reactions. Web. 22 May 2012.<http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/acidbase.html>.

"Antacid." Antacid. Web. 22 May 2012.<http://www.cod.edu/dept/chem/poc/Experiments/Antacid-02/Antacid.htm>.

"Acid-Base Chemistry." Acids and Bases. Web. 22 May 2012.<http://www.shodor.org/unchem/basic/ab/>.

"Baking Soda and Vinegar." Baking Soda and Vinegar. Web. 22 May2012.<http://www.newton.dep.anl.gov/askasci/chem00/chem00303.htm>.

"ThinkQuest : 404." ThinkQuest. Oracle Foundation. Web. 22 May2012. <http://library.thinkquest.org/3347/vinegar bsoda4.html>.

References