Question

21. Consider the titration of 65 mL of 0.085 M Ca(OH)2 with a 0.097 M HBr solution. The number of moles of HBr that will needed to be added to reach the equivalence point is A) 5.6x 10-3 B) 6.3 x 10-3 C) 2.8 x 10-3 D) 1.1 x 10-2 E) 6.3 x 10-2

Answer 1

Molarity of Ca (OH)₂ (MI) = 0,085 M Volume of Calcu), (VI) = 65 mL = 010652 more of Ca (OH)2 = Mini 0,085 x 1 = 0.065 = 0.0055 more Dne more Ca (014) Produce more of ori - 2 Total mole of onion = 2x mote of Calon), = 2 x 010055 Cooll mole At eluivalence Point more of Acid (t) = Mole of on in more of Acid = 0.011 moie Mole of HBr = 161 x 102 mole