Lab 4 - Solubility Rules

The generic expression is 7 a bc ac b some examples

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Unformatted text preview: roup from a compound. The generic expression is: (7) A + BC → AC + B Some examples include: (8) Cu + 2 HNO3 → Cu(NO3)2 + H2 (9) Zn + 2 HCl → ZnCl2 + H2 4 Double Dis place me nt or M e tathe s is Re actions : The atoms or ions in two or more different substances change places to form new compounds. The generic expression is: ( 10 ) AB + CD → AD + CB Some examples include: ( 11 ) HC2H3O2(aq) + NaOH(aq) → NaC2H3O2(aq) + H2O ( 12 ) Pb(NO3)2(aq) + 2 KI(aq) → PbI2(aq) + 2 KNO3(aq) Double displacement reactions fall into at least two major subclasses. Equation 11 shows one of them, a ne utralization reaction between an acid and a base. Equation 12 shows another, a pre cipitation reaction. Soluble species (generally ions) react to form insoluble solid compounds that are called pre cipitate s . 5 Ele ctron Trans fe r or Re dox re actions : Electrons are transferred from one substance to another. These will be treated separately in this lab course. In this experiment, we will work with pre cipitation re actions involving ions. Ionic solids dissolve in wat...
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This document was uploaded on 01/22/2014.

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