Question

calculate weight of H2 S o4 we should be dissolved in thousand litre of water to change its pH by 4 units​

Answer 1

Answer:

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Answer 2

Answer:

49 gm

Explanation:

pH (initial) = 7

pH (final) = 7 - 4 = 3

[H+] = 10^-ph= 10^-3

[H2SO4] = 10^-3/2

no. of moles = Molarity × volume

= 10^-3/2 × 1000

n = 1/2

mass/ wt. = moles ×Molecular mass

= 1/2 × 98

= 49 gm