Preparation of acidic solutions
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To prepare an acidic solution with a pH of 1 using 3 cubic meters of pure water and 98% concentrated sulfuric acid, how many kilograms of concentrated sulfuric acid are needed?
In a solution with pH=1, the hydrogen ion concentration is 0.1 mol/L. 3*1000=3000 liters; 3000*0.1=300 moles. Using the formula m=n*M, we get 300*98=29400 grams, which is equivalent to 29.4 kilograms. 29.4/0.98=30 kilograms. I’m not sure if this calculation is correct.
It should be 15 kilograms; 1 mole of sulfuric acid can provide 2 moles of hydrogen ions.