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Thread: sodium hydroxide and silica reaction

  1. #1 sodium hydroxide and silica reaction 
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    Alkali such as sodium hydroxide and silica reaction is ?
    the product is what ?
    Sticky products ?


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  3. #2  
    exchemist
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    Quote Originally Posted by luna247 View Post
    Alkali such as sodium hydroxide and silica reaction is ?
    the product is what ?
    Sticky products ?
    Well, I suppose you can expect reactions such as SiO₂ + 2NaOH -> Na₂SiO₃ + H₂O, and similar ones with more complex silicate and hydroxy silicate anions, hence the sticky products.


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  4. #3  
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    Thanks a lot , I already know the answer:O型
    I love science , I love chemistry
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  5. #4  
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    Quote Originally Posted by luna247 View Post
    Thanks a lot , I already know the answer:O型
    Then why ask?
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  6. #5  
    Shawn Williams
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    Silica gel is also known as amorphous silicon dioxide with the chemical formula SiO2.It is used as a drying agent to absorb the moisture..it is not as harmful..
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  7. #6  
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    Quote Originally Posted by shawn43 View Post
    Silica gel is also known as amorphous silicon dioxide with the chemical formula SiO2.It is used as a drying agent to absorb the moisture..it is not as harmful..
    Not as harmful as what?
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  8. #7  
    Shawn Williams
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    Rest assured the contents of the packet, silica gel, is basically sand and it is not harmful if swallowed. However, caution should be taken to keep the product out of small children’s reach..
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  9. #8  
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    Not necessarily sticky.
    In concrete technology, the alkali-aggregate reaction (AAR) is a well known reaction between the alkali content of the concrete, as sodium and potassium hydroxides, with reactive, strained quartz to form gels that expand and cause concrete to crack.
    This reaction is a problem in various concrete situations, one of which is railway sleepers.
    Last edited by Warron; September 5th, 2014 at 07:41 AM.
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