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              acid
               基礎(chǔ)科學(xué) 
              
				
              

										 
                      A substance that gives rise to hydro-gen ions (or H3O+) when dissolved in wa-ter. An acid in solution will have a pH below7.This definition does not take into accountthe competitive behavior of acids in solventsand it refers only to aqueous systems. TheLo......（本文共 911 字）      [閱讀本文] >> 
               
			  
				 
              
				 
				
				
              
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