Here's what happens:
* They don't react chemically in a significant way. Sodium silicate (Na2SiO3) is already a salt formed from the reaction of sodium hydroxide (NaOH) and silicic acid (H4SiO4).
* They form a solution. The sodium silicate dissolves in the sodium hydroxide solution, creating a more concentrated solution of silicate ions.
* The mixture is basic. Both sodium silicate and sodium hydroxide are basic compounds, and the resulting mixture will be even more basic than either individual component.
Important Note:
The exact outcome depends on the concentration of each component. High concentrations of both can lead to a highly viscous, even gel-like, solution.
Uses:
This mixture is used in various applications, including:
* Cement and concrete: It acts as a water reducer and improves workability.
* Cleaning agents: Its alkaline nature makes it effective for cleaning surfaces and removing grease.
* Silicate adhesives: It forms strong bonds with various materials.
Safety:
It is important to remember that both sodium silicate and sodium hydroxide are corrosive and should be handled with caution. Always wear appropriate protective gear, and avoid contact with skin and eyes.
