What will be the pH of the resulting solution if to a 100 ml of HCl solution of pH = 1 , 900ml of disstilled water is added?
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Kripan5smilkymadhu
Question
What will be the pH of the resulting solution if to a 100 ml of HCl solution of pH = 1 , 900ml of disstilled water is added?
2 Answer

1. User Answers sharinkhan
concentration of hydrogen ions in the solution = H⁺= 10 (⁻ph)
= 10 ⁻¹ = 0.1 M
M1V1 = M2V2
0.1 x 100 = M2 x (100+900)
M2= 0.01 M
the concentration of HCl after the addition of 900ml of water = 0.01 M
New pH= log (0.01)= 2 
2. User Answers sawakkincsem
Concentration of H positive ions in the solution
[H+] = 10(raise to power –pH)
= 10 raise to power negative 1 = 0.1 M
M1V1 = M2V2
0.1M x 100ml = M2 x (100+900) ml
M2 = 0.01M
The concentration of HCl after addition of 900 ml distilled water is 0.01M
Now, pH = log(0.01) = 2
pH of resulting solution is 2