(5) II < I < III
Answer is 5
I was given Ka’s but I don’t know if it’s necessary to use them.
Carbonic acid, H2CO3, Ka1 = 4.5×10−7, Ka2 = 4.7×10−11
Sulfurous acid, H2SO3, Ka1 = 1.4×10−2, Ka2 = 6.5×10−8
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