The compound HClO4, when placed in water, will dissociate into the ions, H+ and ClO4-. Therefore, the 2.0 M solution will also form 2.0 M H+. The pH is calculated through the equation,
pH = -log[H+]
Substituting,
pH = -log[2] = -0.3
Thus, the pH of the solution is -0.3.
Answer:
4 : 5
Explanation:
80 percent can be written as:
80/100
Now we can reduce the above fraction to its lowest term as shown below
80/100 = 8/10
Divide both the numerator and denominator by 2.
8/10 = 4/5
Now, we can not divide further. So the ratio becomes 4 : 5