calculate the H+ for green tea with a pH of 7.9
pH=-log[H^+]
10^-(pH)=[H^+]
Answer contains ONLY 1 significant figure.
To calculate the H+ concentration for green tea with a pH of 7.9, you can use the equation:
pH = -log[H+]
Rearranging the equation, we have:
[H+] = 10^(-pH)
Let's substitute the given pH value of 7.9 into the equation:
[H+] = 10^(-7.9)
Now, we can calculate the H+ concentration:
[H+] = 1.26 x 10^(-8) M
Therefore, the H+ concentration for green tea with a pH of 7.9 is approximately 1.26 x 10^(-8) M.
To calculate the H+ (hydrogen ion) concentration from a given pH value, you can use the equation:
[H+] = 10^(-pH)
In this case, the pH of green tea is given as 7.9. Plugging this value into the equation, we get:
[H+] = 10^(-7.9)
To evaluate this calculation, we need to apply the exponent rule. If we take the negative value of the exponent (-7.9) and interpret it as a positive exponent, it becomes:
[H+] = 1 / 10^7.9
Now you can use a scientific calculator or computer calculator to calculate the value:
[H+] ≈ 1.258925412×10^(-8)
Therefore, the H+ concentration in green tea, with a pH of 7.9, is approximately 1.26 x 10^(-8) M (moles per liter).
Note: The H+ concentration represents the acidity of a solution. A lower concentration signifies a more acidic solution, while a higher concentration represents a more basic (alkaline) solution.