Question

Assume instructions for conducting a reaction tell you to start with a certain amount of reactant A, and then add two equivalents of reactant B. How will the amounts of reactants A and B be related? The mass of B will be twice the mass of A The mass of A will be twice the mass of B The volume of B will be twice the volume of A The number of moles of B will be twice the number of moles of A QUESTION 5 The molar mass of 2-methylphenol is approximately 108 grams. How many milliliters of 2M NaOH would be necessary to completely deprotonate a 5.4 gram sample of 2-methylphenol, without having any excess NaOH? 54 mL 25 ml 21.6 mL O 5.4 mL QUESTION 6 In problem #5 above, if solid NaOH had been used instead of the 2M solution of NaOH, how many grams of NaOH would be necessary to deprotonate the 5.4 g sample of 2-methylphenol? The molar mass of NaOH is approximately 40 grams 20 g OOO

Answer 1

Ques 4= corret Quis 5 en correct No. of moles с он = Given Mass so n 2-m-phenol - 0.05 mol - Molar Mass C2-m-phenol sot 1089 molt To & Moon Tol + Nat + ho Imol & -mothul of of 2-methyl phenol is neutralized by Imol of Naon. So 0.05 mol of 2-methylphenol is deprotonated by o.osmol of Noon. Molarity = no. of moles so volume = no. of moles Volume in (2) Molarity for Naon, volume = 0.05 mol = 0.0252 = 25mL 2pol Lt Quest Given mars = No. of moles & Molar mass so mass of noon = 0. osnlx 40 g mot = 29. Naok,