Question

difference between HSO4 and H2SO4​

Answer 1

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H2SO4 is a strong acid. When it looses a hydrogen, it becomes HSO4, and gains a negative charge. HSO4- is the conjugate base of H2SO4 but it can still give its Hydrogen away, and thus it is a weak acid as well. It's weak because it doesn't part with its hydrogen as easily as H2SO4 did.

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