Redox and the conversion to potassium metal
Although potassium is more electropositive than sodium, KCl can be reduced to the metal by reaction with metallic sodium at 850 °C because the more volatile potassium can be removed by distillation (see Le Chateliers principle):

  
    
      
        
          
            KCl
            
              
                (
                l
                )
              
            
            
              
            
          
          

          
          +
          
            Na
            
              
                (
                l
                )
              
            
            
              
            
          
          
            
              
                
                  
                    
                      ↽
                    
                    
                    
                    
                      −
                    
                  
                
              
              
                
                  
                    
                      −
                    
                    
                    
                    
                      ⇀
                    
                  
                
              
            
          
          
            NaCl
            
              
                (
                l
                )
              
            
            
              
            
          
          

          
          +
          
            K
            
              
                (
                g
                )
              
            
            
              
            
          
        
      
    
    {\displaystyle {\ce {KCl_{(l)}{}+ Na_{(l)}<=> NaCl_{(l)}{}+ K_{(g)}}}}
  This method is the main method for producing metallic potassium.
A tufted angioma (also known as an "Acquired tufted angioma," "Angioblastoma," "Angioblastoma of Nakagawa," "Hypertrophic hemangioma," "Progressive capillary hemangioma," and "Tufted hemangioma") usually develops in infancy or early childhood on the neck and upper trunk, and is an ill-defined, dull red macule with a mottled appearance, varying from 2 to 5 cm in diameter. : 596

See also
List of cutaneous conditions
Skin lesion

References


== External links ==