For the Rolaids tablet: Mass of the tablet : 1.32 g Cost of the Rolaids\' bottle
ID: 768577 • Letter: F
Question
For the Rolaids tablet: Mass of the tablet : 1.32 g Cost of the Rolaids' bottle : $ 3.69 Number of tables in a bottle: 150 Molarity of the Acid : 0.59 M Volume of the Acid : .025 L Molarity of the Base : .2005 M Volume of the Base : 0.0273 L Calculate Number of moles of HCl added. Number of moles of NaOH used to neutralize the excess of acid. Number of moles of HCl neutralized by the tablet. Average cost per mole of HCl neutralized per tablet. Number of grams of HCl neutralized per gram of tablet.Explanation / Answer
moles of HCl added = 0.59 x0.025 = 0.01475 moles , moles of NaOH used to neutralise excess acid = 0.2005 x0.0273 = 0.005473 moles , moles of HCl neutralised by tablet = (0.01475-0.005473) = 0.009276 moles, tablet mass used = 1.32 gm per 0.009276 , per 1 mole HCl tablets used = 142.3 gm , tablets used = 142.3/1.32 = 108 , cost = (108 x3.69/150) = 2.657 $, per 1 gm tablet moles of HCl neutralised = (0.009273/1.32) = 0.00703 , per 1 gm tablet mass of HCl neutralised = 0.00703 x36.5 = 0.2565 gm