By Natasha Gilani Updated Mar 24, 2022
JPC-PROD/iStock/GettyImages
A chemical base, or alkaline, accepts hydrogen ions (H+) and typically dissolves in water to conduct electricity. Bases turn litmus paper blue, indicating their alkalinity. In contrast, acids release hydrogen ions when they dissolve. Both acids and bases are chemically reactive, making them indispensable in everyday household products—especially cleaners and kitchen staples.
Baking soda, or sodium bicarbonate (NaHCO3), is also called bicarbonate of soda, cooking soda, or bread soda. It forms when carbon dioxide, ammonia, sodium chloride (salt), and calcium carbonate react in water. Natural deposits date back roughly 48 million years to the Eocene epoch, with the Green River Formation in Colorado being a major source. Baking soda’s primary role in the kitchen is to release carbon dioxide that leavens dough. Beyond baking, diluted baking soda alleviates heartburn, serves as a gentle mouthwash, treats gum issues, and soothes insect bites. A paste of hydrogen peroxide and sodium bicarbonate can replace commercial toothpaste, while a simple solution cleans wine, tea, and coffee stains from cups and fabrics.
When potassium hydroxide (KOH) or sodium hydroxide (NaOH) react with triglycerides—a process known as saponification—they produce soap. This alkaline compound is an effective cleanser and mild antiseptic. Soap solutions are also employed to treat heavy‑metal poisoning and, when diluted, can act as an insecticide on garden plants.
Ammonium hydroxide, commonly known as household ammonia, is a versatile base that removes tarnish and stains. It cleans gold and silver jewelry, porcelain, glass, stainless steel, and brassware, and it tackles tough stains such as blood, perspiration, red wine, and ink marks.
Vinegar—produced by fermenting ethanol into acetic acid—also contains trace amounts of citric and tartaric acids. Varieties include malt, wine, apple cider, palm, date, balsamic, and honey vinegar. In culinary uses, vinegar flavors pickles, vinaigrettes, salad dressings, sushi rice, and sauces. White vinegar is a common household cleaner that dissolves mineral deposits in coffee makers and glass, and it can also be employed to control lawn weeds.
Citric acid, naturally found in citrus fruits such as oranges and lemons, serves as a food additive and preservative. It is also an efficient cleaning agent for removing limescale and other mineral buildup.
