Question

pH of tomato juice is 4.4. Then concentration of $H_3{O}^{+}$ will be:

• A. $39\times {10}^{-4}$
• B. $3.9\times {10}^{-5}$
• C. $3.9\times {10}^{-4}$
• D. $3.9\times {10}^5$

Answer 1

The correct option is B $3.9\times {10}^{-5}$

$pH$ of tomato juice$=4.4$

$-\log \left[H_3{O}^{+}\right]=4.4$

$\left[H_3{O}^{+}\right]=$ antilog $4.4$

$\left[H_3{O}^{+}\right]=3.981\times {10}^{-5}$