Answer:
The substance with a weaker molecular attraction
 
        
             
        
        
        
The pH of a 0.260 M solution of ascorbic acid is 0.585. Details about pH can be found below. 
<h3>How to calculate pH?</h3>
The pH of a solution can be calculated using the following expression:
pH = - log {H+}
According to this question, ascorbic acid is a diprotic acid and posseses a concentration of 0.260M. The pH can be calculated as follows;
pH = - log {0.260}
pH = 0.585
Therefore, the pH of a 0.260 M solution of ascorbic acid is 0.585. 
Learn more about pH at: brainly.com/question/15289741
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Answer:
D
Explanation:
Since [pKa = - log Ka]....hence..,the larger the Ka value,the stronger the acid is..so this means that the pKa is vice versa
Saying that the smaller the pKa value..the stronger the acid is.
 
        
                    
             
        
        
        
Answer:
Five
Explanation:
All group 15 elements have five valence electrons, but they vary in their reactivity.