.What? Can you ask the question more carefully?
Using expired lye in cold process soap can greatly affect the process and final product.
47mmHg @ 37oC
Metal oxide + Water --> Metal hydroxide
The lungs are responsible for excreting water in expired air through the process of respiration. As we breathe in oxygen and exhale carbon dioxide, water vapor is also expelled from the body.
Expired air is saturated with water vapor because the air we breathe in is warmed and humidified as it passes through the nasal passages and lungs. As a result, when we exhale, the air leaving our bodies contains more moisture than the air we inhale. This excess moisture is what causes expired air to be saturated with water.
metal + acid -> salt + water metal + oxygen -> metal oxide metal oxide + acid -> salt + water metal + water -> metal hydroxide + hydrogen Metal + Steam -> Metal Oxide + Hydrogen Metal + Acid -> Metal salt + Hydrogen
Almost certainly, yes. The idea of an "expiration date" for distilled water is a joke by the bottler designed to trick you into buying fresh water when yours is "expired". As long as the bottle is still sealed, it's perfectly safe.
A metal oxide reacts with water to produce a metal hydroxide.
water never goes bad
When a metal oxide reacts with water, it forms a metal hydroxide. This reaction typically involves the metal oxide releasing hydroxide ions when it reacts with water molecules. Metal hydroxides are basic compounds that can dissociate in water to form metal cations and hydroxide anions.
metal has a tendency to oxidize and water oxidizes the metal . oxidation leads to rust formation
acid+ metal oxide --> salt + water