Calculate whether a precipitate will form if 0.35 L of 0.0044 M Ca(NO3)2 and 0.17 L of 0.000 39 M NaOH are mixed at 25C. (See Figure 4.2 for Ksp values.) (Hint: See Sample D.) 3
Ch 15 Chemical Kinetics example 1: lnk2/2k1= Ea/R(1/300)(1/31) ln2 = Ea/8.31491.075x10^4 Ea= 5.35x10^4 J/mol Collision Theory of Kinetics in order for most reactions to take place, molecules must collide at 10^9 collisions/sec molecules collide if: 1 enough E to break bonds 2 colliding in the proper orientation to be effective they must be fast enough to overcome bonding forming, some effective, some are not Effective Collisions conditions net= effect greater the frequency the greater the reaction rate effective collision formation of the activated complex A is the frequency factor collision frequency z # collisions/sec more=effective k=A(e^ Ea/RT = pz(e^ Ea/RT) orientation factor p<1 most
