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Double-Replacement Reactions. By: Brianna Little & Dylan Markowitz. Explanation. Double-replacement reaction --- A chemical reaction between two compounds where the positive ion in each compound is switched. ( make sure that the metal comes first) A B + C D AD + CB. Example.
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Double-Replacement Reactions By: Brianna Little & Dylan Markowitz
Explanation • Double-replacement reaction --- A chemical reaction between two compounds where the positive ion in each compound is switched. ( make sure that the metal comes first) AB + CDAD+ CB
Example This picture shows an example of how double replacement reactions work. Metal- positive ions Nonmetal- negative ions
AgNO3 + NaCl yields to which products? • AgNa + NOCl • AgCl + NaNO • AgCl + NaNO3 • Ag+Cl+Na+NO3
HCl + NaOH yields to which products? • HOH + NaCl • HOH+NaCl3 • HNa+ ClOH • ClOH+ Hna
Everyday life examples * tums & stomach acid: HCl & CaCO3 H₂CO3+ CaCl₂ * acid soil & rain: CaSO₄ + H2O Ca(OH)₂ (s) + H₂SO₄
Try something more difficult • K₂CO3+ Ca(OH)₂ yields to which products?
Supplemental Facts • All compounds containing Na+, K+, or NH4+ ions are soluble in water. • Double replacement reaction can result in formation of a water, or the reaction in which a strong acid reacts to form a weaker acid.
Websites for more information • http://chemteacher.chemeddl.org/services/chemteacher/index.php?option=com_content&view=article&id=42 • http://www.brightstorm.com/science/chemistry/chemical-reactions/double-replacement-reactions/
Tonight’s Homework Answer this question AgNO3 + NaHCO3?