Chapter 05 - CHEMISTRY The Molecular Science Chapter five...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMISTRY The Molecular Science Chapter five Chemical Reactions
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Dissolution of (a) Ionic and (b) Molecular Compounds Ionic compounds dissociate. 100 % dissociation strong electrolyte.
Background image of page 2
If a compound contains at least one of the ions indicated for soluble compounds in Table 5.1 (p. 165) then the compound is at least moderately soluble.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Illustration of Some Solubility Rules
Background image of page 4
Practice Problem. 5.1 p.166 Predict whether each of these compounds is likely to be water soluble. a) NaF b) Ca(CH 3 COO) 2 c) SrCl 2 d) PbCl 2 e) HgS
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Exchange reaction: KCl (aq) + NaBr (aq) KBr (aq) + NaCl (aq) Since all of these ionic compounds are soluble, they have dissociated into their corresponding ions: K + (aq) + Cl (aq) + Na + (aq) + Br (aq) K + (aq) + Br (aq) + Na + (aq) + Cl (aq)
Background image of page 6
If one of the potential products of the reaction removes ions from the solution, a reaction will occur. Three different kinds of products can cause an exchange reaction to occur in aqueous solution: 1. Formation of an insoluble ionic compound (precipitate). 1. Formation of a molecular compound that remains in solution (e.g. H 2 O). 3. Formation of a gaseous molecular compound.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Precipitation Reactions formation of an insoluble ionic compound. BaCl 2(aq) + Na 2 SO 4(aq) 2NaCl (aq) + BaSO 4(s) precipitate
Background image of page 8
Practice Problem 5.2 p. 168 Predict the products and write a balance chemical equation for the exchange reaction in aqueous solution between these ionic compounds. Use Table 5.1 to determine solubilities and indicate in the equation whether a precipitate forms. a) NiCl 2 and NaOH b) K 2 CO 3 and CaBr 2
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Precipitation of Silver Chloride AgNO 3 (aq) + NaCl (aq) AgCl (s) + NaNO 3 (aq)
Background image of page 10
Ionic Equations Overall balanced equation: AgNO 3 (aq) + NaCl (aq) AgCl (s) + NaNO 3 (aq) Total Ionic Equation: Ag + + NO 3 -1 + Na + + Cl -1 AgCl + Na + + NO 3 -1 Spectator ions: NO 3 -1 + Na + are present on both sides of eqn. Net Ionic Equation : + (aq) -1 (aq) (s)
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Guidelines for Writing Net Ionic Equations 1. Write the overall balanced equation using the correct formulas for the reactants and products. BaCl 2 (aq) + Na 2 SO 4 (aq) 2NaCl (aq) + BaSO 4 (s) 2. Use the general guidelines in Table 5.1 to determine the solubilities of reactants and products. 3. Recognize that all soluble ionic compounds dissociate into their component ions in aqueous solution. BaCl 2 (aq) Ba 2+ (aq) + 2 Cl (aq) 2 4 (aq) + (aq) 4 2− (aq)
Background image of page 12
with the ions in solution from each soluble compound shown separately. Total Ionic Equation : Ba +2 + 2Cl -1 + 2Na + + SO 4 -2 2Na + +2Cl -1 + BaSO 4(s) 5. Cancel out the spectator ions from each side of the complete ionic equation to obtain the net ionic equation. Net Ionic Equation
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 55

Chapter 05 - CHEMISTRY The Molecular Science Chapter five...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online