Question

To prevent waste, a chemistry department converted a lab procedure to a microscale version.

The total quantity of 1 M HClHCl used by one pair of students for each procedure is given in the table. There are 162162 students in the course.

Large scale quantity	Microscale quantity
97.4 mL	14.3 mL

Given that 1500 kW⋅hr1500 kW⋅hr (kilowatt‑hours) of electricity are required to produce 1 Mg (megagram) of HCl,HCl, calculate the amount of energy saved by converting the procedure to a microscale version.

Note: 1 kW⋅hr=3.6 MJ1 kW⋅hr=3.6 MJ (megajoules)

Answer 1

The Volume ot HCL let/aawed Lange Wantity Scale - Mteroscale quantty 97.4 mL- 14.3mL 83.1mL Now, Molus tHCL Considered Motanity Volume Cin L) 16 2 &tudenls M X 93.1 x 10-3 L 83.1x10-3 motes .0831 moles Molar Mas af HCL xH+ xCL Ixi + x35.536.5a/mol Mans for HOCA Molar Mars Moles 36Salmol x0.0831 moles 3.033 8 Maes for Hal x 1500(K-W) IMaotHcL . Enexgrd sawad 3.033g x150 0 [: M3 103 Cloa) 4.54ax 10K-w)kr 4.549 x to 0 3.6 KJ 16. 38 KJ 16.376 KJ :. Energy sawed by 81 pahs ot student 8Ix 16.38 KJ 1326.78 KJ Thoe are tew mising/wong valuus its hould he 162 and not 162162, pleaoe can you check once