6. Which of the following could be a base in a water solution? a. Br-
b. NH+4
c. H2O
d. NO-3
e. Ca2+
f. C2H3O-2

h20

Explanation:

H2O is an acid and a base, and H20 is water.

the answer is b. dilution

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.