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Stoichiometry

Why is Ka1=Ka...

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Why is Ka1=Ka2 for sulphuric acid in water

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Why is for H₂SO₄ in water?

K a_{2} << K a_{1}

H_{2} S O_{4}

K_{a 2}

≪

K_{a 1}

H_{2} S O_{4}

Q. For a polybasic acid, the dissociation constants have different value for each steps, e.g.,

H_{3} A ⇌ H^{+} + H_{2} A^{-}; K = K_{a_{1}}

H_{2} A^{-} ⇌ H^{+} + H A^{2 -}; K = K_{a_{2}}

H A^{2 -} ⇌ H^{+} + A^{3 -}; K = K_{a_{3}}

What is the observed trend of dissociation constants in succesive stage?

Q. Sulphurous acid

(H_{2} S O_{3})

K_{a 1} = 1.7 \times 10^{- 2}

K a 2 = 6.4 \times 10^{- 8}

0.588 M H_{2} S O_{3}

is ______ (Round off to the Nearest Integer).

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