To determine whether the solution is acidic or basic, you should calculate its pH.
pH = - log [H+]
Acidic: ph < 7
Basic: ph > 7
Neutral : ph =7
For aqueous solution:
[H+][OH-] = 10^-14
Your solution has [oh-] = 10^-5. It means [h+] = 10^-9
ph =- log [h+] = - log [10^-9] = 9
Because its pH > 7, then the solution is basic.
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Verified answer
To determine whether the solution is acidic or basic, you should calculate its pH.
pH = - log [H+]
Acidic: ph < 7
Basic: ph > 7
Neutral : ph =7
For aqueous solution:
[H+][OH-] = 10^-14
Your solution has [oh-] = 10^-5. It means [h+] = 10^-9
ph =- log [h+] = - log [10^-9] = 9
Because its pH > 7, then the solution is basic.