Electrolytes

Solutes whose solutions does not conduct electricity are nonelectrolytes. These solution are composed of molecules or are pure water.

Ionic salts dissolved in water are strong electrolytes.

Some solutes are poor conductors and are known as weak electrolytes.

Fig. 9-2, p. 233

The ability of a solution to conduct electricity is regarded as positive evidence that the solution contains ions.

Solutions composed of molecules do not conduct electricity because there are no ions present.

Electrolytes

Fig. 9-3, p. 234

KCl(s) H2O K+(aq) + Cl-(aq)

Fig. 9-4, p. 235

Fig. 9-6, p. 238

Fig. 9-5, p. 235

CuCl2(s) H2O Cu+2(aq) + 2 Cl–

(aq)