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    Hi, I've attached the question to view. So far I have found [H+] using pH. Rearranged Ka so I have a ratio [NO2-] over [HNO2] but I don't know where to go from there. Any help would be really appreciated

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    (Original post by slowdive)
    Hi, I've attached the question to view. So far I have found [H+] using pH. Rearranged Ka so I have a ratio [NO2-] over [HNO2] but I don't know where to go from there. Any help would be really appreciated

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    So you get a ratio of 4:1 for NaNO_2 : HNO_2. Thus you need 200 ml of NaNO2 and 50 ml HNO2 since they have the same concentration
 
 
 
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