What is the hydronium ion concentration of a solution with a poh of 6.90? 6.29 × 10−7 m 6.53 × 10−7 m 7.18 × 10−8 m 7.94 × 10−8 m

D. 7.94 x 10⁻⁸ M

Explanation:

Here's the concepts you need to know to solve this:

So, plug in pOH to find pH (since we want hydronium ion concentration, not hydroxide).

6.90 + pH = 14

pH = 7.10

Now, to reverse a negative log, you use 10⁻ˣ, where x is your pH.

[H⁺] =

[H⁺] = 7.94 x 10⁻⁸ M

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.