The answer is it has 4 electrons. If an atom is neutral than the electrons and protons will be equal.
The answer for that is 16, math right?
<u>Answer:</u> The pH of the solution is 1.41
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
![\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20the%20solution%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20solute%7D%5Ctimes%201000%7D%7B%5Ctext%7BMolar%20mass%20of%20solute%7D%5Ctimes%20%5Ctext%7BVolume%20of%20solution%20%28in%20mL%29%7D%7D)
Given mass of perchloric acid = 581.1 mg = 0.5811 g (Conversion factor: 1 g = 1000 mg)
Molar mass of perchloric acid = 100.5 g/mol
Volume of solution = 150 mL
Putting values in above equation, we get:
![\text{Molarity of perchloric acid}=\frac{0.5811\times 1000}{100.5\times 150}\\\\\text{Molarity of perchloric acid}=0.0385M](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20perchloric%20acid%7D%3D%5Cfrac%7B0.5811%5Ctimes%201000%7D%7B100.5%5Ctimes%20150%7D%5C%5C%5C%5C%5Ctext%7BMolarity%20of%20perchloric%20acid%7D%3D0.0385M)
1 mole of perchloric acid produces 1 mole of
ions and 1 mole of
ions
To calculate the pH of the solution, we use the equation:
![pH=-\log[H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH%5E%2B%5D)
We are given:
![[H^+]=0.0385M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D0.0385M)
Putting values in above equation, we get:
![pH=-\log (0.0385)=1.41](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%280.0385%29%3D1.41)
Hence, the pH of the solution is 1.41