userdata-paziras-Chem51-Chap_06

Synthesisorcombination abab twoelementsorcompound

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Al2(SO4)3 + ____ H2O 3) Fe3O4 + H2 ® Fe + H2O Fe O H Reactant Products ___Fe3O4 + ___ H2 ® ___ Fe + ___ H2O 4) C4H10 + O2 ® CO2 + H2O C H O Reactant Products ___ C4H10 + ___ O2 ® ___ CO2 + ___ H2O 4 Chemistry 51 Chapter 6 TYPES OF CHEMICAL REACTIONS · Chemical react ions are classified into five types: 1. Synthesis or Combination ( A + B ® AB ) · Two elements or compound combine to form another compound. 2. Decomposition ( AB ® A + B ) · A co mpound breaks up to form elements or simpler compound. 3. Single Replacement ( A + BC ® B + AC ) · A more reactive element replaces a less reactive element in a co mpound. · These react ions will be discussed in more detail later in this chapter. 5 Chemistry 51 Chapter 6 TYPES OF CHEMICAL REACTIONS ( AB + CD ® AD + BC ) 4. Double Replacement · Two compounds interact to form two new compounds. · These react ions will be discussed in more detail later in this chapter. 5. Combustion Reactions: · A react ion that invo lves oxygen as a reactant and produces large amounts of heat is classified as a combustion react ion. CH4 (g) + 2 O2 (g) ® CO2 (g) + 2 H2O (g) Examples: Classify each of the reactions below: 1. Mg + CuCl2 ® MgCl2 + Cu 2. CaCO3 ® CaO + CO2 3. 2 HCl + Ca(OH)2 ® CaCl2 + H2O 4. C3H8 + 5 O2 ® 3 CO2 + 4 H2O 5. 4 Fe + 3 O2 ® 2 Fe2O3 6 Chemistry 51 Chapter 6 DOUBLE REPLACEMENT REACTIONS · Double replacement reactions can be subdivided into one of the fo llowing subgroups: 1. Precipitation: In these reactions one of the products formed is an inso luble so lid called a precipitate. For example, when solut ions of potassium chromate,K2CrO4 , and barium nitrate, Ba(NO3)2 , are combined an inso luble salt barium chro mate, BaCrO4 , is formed. K2CrO4 (aq) + Ba(NO3)2 (aq) ® BaCrO4 (s) + 2KNO3 (aq) Precipitate These react ions will be further discussed in Chapter 8 2. Neutralization: The most important reaction of acids and bases is called neutralization. In these reactions an acid combines with a base to form a salt and water. For example: HCl (aq) + Na H (aq ) ¾¾ N Cl (aq) + H 2 O (l) O ® a aci...
View Full Document

Ask a homework question - tutors are online