Question

which of the following correctly pairs the substance with its ph range? pure water - ph 9 ammonia - ph 4 - 5 lemon - ph 7 - 8 stomach acid - ph 1 - 2 multiple choice 1 point table salt (nacl) dissolves in water because it contains: hydrogen bonds nonpolar covalent bonds polar covalent bonds ionic bonds

Explanation:

Step1: Recall pH values

Pure water has a pH of 7. Ammonia is a base and has a pH greater than 7. Lemons are acidic and have a pH less than 7. Stomach - acid is highly acidic with a pH in the range of 1 - 2.

Step2: Recall salt - water interaction

Table salt (NaCl) is an ionic compound. It dissociates in water due to the presence of ionic bonds. Water molecules, which are polar, interact with the ions in NaCl.

Answer:

1. D. Stomach acid - pH 1 - 2
2. D. Ionic bonds