question below with explaination

Question

Which of the following is a strong electrolyte?

1. a. HC₂H₃O₂
2. b. NaNO₃
3. :c. Cu(OH)₂
4. d. CO₂

Answer 1

A strong electrolyte is a compound that will ionize or dissociate completely when placed into solution.

a. HC₂H₃O₂ can be acetic acid(but could be other things as well). Assuming it is meant to represent acetic acid (ethanoic acid) it would be a weak electrilyte.

b. NaNO₃ is a STRONG electrolyte

c. Cu(OH)₂ is mostly insoluble, so is not generally considered a strong electrolyte. However, the caveat is that the small amount that does dissolve is a strong electrolyte.

d. CO₂ is not a strong electrolyte. When dissolved in water, it creates carbonic acid, a weak electrolyte.