ࡱ> CEB ubjbj 4(uBBBBBVVVV$zDVp%$$$$$$$$h&)X%B%BB*% BB$$W#h$pP #$@%0p%#r)r) $r)B$H>,$'%% p%r) : pH Worksheet Key What is pH a measure of? The concentration of H+ in solution What is the equation used for finding pH? pH =-log [H+] What is the equation that relates to pH and pOH? pH + pOH =14 Complete the following table [H3O+][OH-]pHpOHAcidic/Basic?1.0 x 10-9 M1 x 10-595Basic2.4 x 10-13 M4.1x10-2 M12.61.4Basic1.78 x 10-4 M5.62 x 10-11 M3.7510.25Acidic2.82 x 10-9 M3.55 x 10-6 M8.555.45Basic What would be the pH of each of the following: a) 0.0010 M HCl __3__ g) 0.024 M HCl _1.6___ b) 0.0010 M HNO3 __3_ h) 0.075 M KOH __12.9__ c) 0.010 M NaOH __12__ i) 0.000034 M HCl _4.5___ d) 0.0035 M HCl __2.46__ j) 0.000000000001M HCl __12__ e) 1.0 M HBr ___0_ f) 1.0 M KOH __14__ A 2.63 g NaOH are dissolved in 156 mL of solution. Determine the NaOH concentration & the pH. 2.63 g NaOH x 1 mol NaOH =0.0658 mol NaOH 156 mL x 1 L = 40.0 g NaOH 1000 ML [NaOH]= 0.0658 mol NaOH/0.156 L = 0.42 M pH =-log [0.42 M] = 0.37 List 3 strong acids and explain why these acids are considered strong acids. HClO4, H2SO4, HNO3 They are strong since they dissociate 100% in water giving the maximum amount of H+ ion from the compound List 3 weak acids and explain why these acids are considered weak acids. HC2H3O2, H3PO4, HNO2 They are weak since they dissociate much less than 100% in water so there is a large portion of the original acid present List 2 strong bases and explain why these bases are considered strong bases. NaOH, Ba(OH)2 They are strong since they dissociate 100% in water giving the maximum amount of OH- ion from the compound . The water formed is a very stable compound List 1 weak base and explain why it is considered a weak base. 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