Acids donate protons, bases accept them, salts are their neutral children, and pH measures the balance—litmus just shows the side. But in my factory, we never use litmus; we trust digital pH meters because a batch of soap once failed when a colour shift fooled the eye. Baking soda's base nature lifts cakes, washing soda's high pH cuts grease, and plaster sets by grabbing water molecules back—I see this daily in our quality checks, where moisture content is everything. This precision keeps my job, which pays for my daughter's coaching, so I believe in the meter, not the paper.
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