the ph of a solution is a measure of the quantity of hydrogen atoms (h) in the solution. it is given by the…

Explanation:

Step1: Recall pH formula

$pH = -\log[x]$, where $x = [H^+]$.

Step2: Calculate pH of oven - cleaner

For oven - cleaner, $x = 10^{-13}$. Then $pH=-\log(10^{-13})$. Since $\log(10^{-13})=- 13$, so $pH = 13$.

Step3: Calculate pH of water

For water, $x = 0.0000007=7\times10^{-7}$. Then $pH = -\log(7\times10^{-7})=-\left(\log7+\log(10^{-7})\right)$. $\log7\approx0.845$ and $\log(10^{-7})=-7$. So $pH\approx-(0.845 - 7)=6.2$.

Step4: Calculate pH of blood

For blood, $x = 0.00000004 = 4\times10^{-8}$. Then $pH=-\log(4\times10^{-8})=-\left(\log4+\log(10^{-8})\right)$. $\log4\approx0.602$ and $\log(10^{-8})=-8$. So $pH\approx-(0.602 - 8)=7.4$.

Step5: Calculate pH of vinegar

For vinegar, $x = 0.0063 = 6.3\times10^{-3}$. Then $pH=-\log(6.3\times10^{-3})=-\left(\log6.3+\log(10^{-3})\right)$. $\log6.3\approx0.800$ and $\log(10^{-3})=-3$. So $pH\approx-(0.800 - 3)=2.2$.

Answer:

Oven cleaner: $13$ Water: $6.2$ Blood: $7.4$ Vinegar: $2.2$