Answer:
The given substances and their respective pH levels are:
a. Agua caliente, pH 7.8 (Hot water)
b. Agua de mar, pH 8.5 (Sea water)
c. Café, pH 5.0 (Coffee)
d. Blanqueador, pH 12 (Bleach)
These pH values indicate the level of acidity or alkalinity of each substance. pH values below 7 are acidic, pH values above 7 are alkaline (basic), and pH 7 is neutral. Therefore:
Agua caliente (Hot water) is slightly alkaline with a pH of 7.8.
Agua de mar (Sea water) is also alkaline with a pH of 8.5.
Café (Coffee) is acidic with a pH of 5.0.
Blanqueador (Bleach) is highly alkaline with a pH of 12.
