A solution formed by dissolving an antacid tablet has a pH of 9.18. Calculate [H+].
To calculate the concentration of H+ (hydrogen ions), we can use the equation for pH:
pH = -log [H+]
First, let's convert the given pH value to the concentration of H+. Taking the equation for pH and rearranging it, we get:
[H+] = 10^(-pH)
Substituting the given pH value of 9.18 into the equation:
[H+] = 10^(-9.18)
To calculate this, you can use a scientific calculator or use logarithmic tables. If using a calculator, enter 9.18, then take the inverse function (usually denoted by "1/x" or "10^x"), which will give you the concentration of H+.
[H+] ≈ 6.46 x 10^(-10) M
Therefore, the concentration of H+ in the solution is approximately 6.46 x 10^(-10) M.