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Which of the following statement(s) is/a...

Which of the following statement(s) is/are correct?

A

the pH of `1.0 xx 10^(-8)M` solution of HCl is 8

B

the conjugate base of `H_2PO_4^-" is "HPO_4^(2-)`

C

autoprotolysis constant of water increases with temperature

D

When a soltion of a weak monoprotic acid is titrated again a strong base, at half -neutralization point pH = (1/2) pKa.

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The correct Answer is:
B, C
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  7. A solution of chloroacetic acid, ClCH2COOH containing 9.45 grams in 50...

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  8. The Kw of water at two different temperature is : T" "25^@C" "...

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  9. The equilibrium constant of the reaction. 2Ag(s) + 2I^(-)– + 2H2O Le...

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  10. When a 40 mL of a 0.1 M weak base in titrated with 0.16 M HCl, the pH ...

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  11. How many moles of sodium hydroxide can be added to 1.00 L of a solutio...

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  12. 20 mol of M//10 CH(3)COOH solution is titrated with M//10 NaOH solutio...

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  13. Calculate the OH– concentration and the H3PO4 concentration of a solut...

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  14. Solubility product of AgCl is 2.8xx10^(-10) at 25^(@)C. Calculate solu...

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  15. K(a) for the ionisation of Fe^(3+) to Fe(OH)^(2+) and H^(o+) is 6.5 xx...

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  17. A weak base BOH was titrated against a strong acid. The pH at 1/4 the ...

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  18. At 25^@C, will a precipitate of Mg(OH)2 form in a 10^(-4)M solution of...

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