Question

ORRECT be sure to SHOW ALL WORK and GIVE ANSWERS WITH THE a correct answer unless all of art D: (20 points) Answer ONE of the following questions, either A or B. For the probl OF SIGNIFICANT FIGURES AND UNITS. Full credit will not be given f your work is shown. POINTS WILL BE SUBTRACTED if an answer does hot have the correct number of significant figures and units A(20 pt) A 20,00-ml sample CHaN $.2 x 104 Calculate the volume of HICI are required to reach the equivalence poinr? What is the pH of the solution at the equivalence point? 153-x B 20 pts) A buffer is prepared by combining 25 mL of O SO MM NH(a) with 25m Ha what is the pl { ofthe buffer? (KOI l)-S6x10 -... ??vesi : .astaSer.GY nitsCe") ml. ot 0 20 M Bonus question (5 pt) Natural rainfall is slighdly acidic at a pli of about 5.5. Why is the pH of natural water is acidic HNOs forms when Na dissolves in rainwater HO, forms when 02 dissolves in rainwater HSO, forms when smog dissolves in rainwater rain acidic? ntsnt nds+-coo-).oas.oos ? COs forms when CO2 dissolves in rainwater C, e .Gos
Please do these out

Answer 1

t 2o-220M 2F at eauivalence Point M2- CL CL

O. 2 25 IM ς.6xto ct - pn= 9,43