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The reason for this is that, in aqueous solution, the ion written as Ag + actually exists as the four-coordinate tetrahedral aqua species [Ag(H 2 O) 4] +. The first step is then a substitution reaction involving the displacement of a bound water molecule by ammonia forming the tetrahedral complex [Ag(NH 3 )(H 2 O) 3 ] + .
Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes
Ag 2 O features linear, two-coordinate Ag centers linked by tetrahedral oxides. It is isostructural with Cu 2 O. It "dissolves" in solvents that degrade it. It is slightly soluble in water due to the formation of the ion Ag(OH) − 2 and possibly related hydrolysis products. [13] It is soluble in ammonia solution, producing active compound of ...
Dalecarlia Water Treatment Plant, Washington, D.C. Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.
In solutions, mass concentration is commonly encountered as the ratio of mass/[volume solution], or m/v. In water solutions containing relatively small quantities of dissolved solute (as in biology), such figures may be "percentivized" by multiplying by 100 a ratio of grams solute per mL solution. The result is given as "mass/volume percentage".
For example, in a solution with a 1:5 dilution ratio, entails combining 1 unit volume of solute (the material to be diluted) with 5 unit volumes of the solvent to give 6 total units of total volume. In photographic development, dilutions are normally given in a '1+x' format.
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