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........................... xM
175cm³ 0M ..................... 1,25-x
25/175 = x/1,25-x
175x = 25(1,25-x)
175x = 31,25-25x
200x = 31,25
x = 0,156 M
n=Cm*v
n=0,156*0,2
n=0,0312moli HCl
m=n*M
m=0,0312*36,4606
m = 1,1375g HCl