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At 90^(@)C, pure water has [H(3)O^(o+)] ...

At `90^(@)C`, pure water has `[H_(3)O^(o+)] = 10^(-6)M`. What is the value of `K_(w)` at `90^(@)C`

A

`10^(-6)`

B

`10^(-8)`

C

`10^(-12)`

D

`10^(-14)`

Text Solution

Verified by Experts

The correct Answer is:
C
`K_(w) = [H^(o+)] [overset(Theta)OH] = 10^(-6) xx 10^(-6) = 10^(-12)`
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CENGAGE CHEMISTRY-IONIC EQUILIBRIUM-Ex 8.2
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  2. 2.0 gof dibrona (B(2)H(6)) reacts with water to product 100mL solution...

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  3. At 90^(@)C, pure water has [H(3)O^(o+)] = 10^(-6)M. What is the value ...

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  4. HCOOH and CH(3)COOH solutions have equal pH. If K(1)//K(2) is 4, the r...

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  5. 2H(2)O hArr H(3)O^(o+) + overset(Theta)OH,K(w) = 10^(-14) at 25^(@)C, ...

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  6. Which of the following expression is wrong?

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  7. For a 'C'M concentarted solution of a weak electrolyte A(x)B(y)alpha(d...

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  8. K(b) for NH(4)OH is 1.8 xx 10^(-5). The [overset(Theta)OH] of 0.1 M NH...

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  9. The dissociation constant of monobasic acids A, B,C and D are 6 xx 10^...

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  10. The molarity of NH(3) of pH = 12 at 25^(@)C is (K(b) = 1.8 xx 10^(-5))

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  11. K(a) of HA at 25^(@) is 10^(-5). If 0.1mol of this acid is dissolved i...

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  12. For a polyprotic acid, H(3)PO(4) its three dissociation constanst K(1)...

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  13. Given HF + H(@)O overset(K(g))hArr H(3)O^(o+) + f^(o+) F^(Theta) + H...

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  14. A certain weak acid has a dissociation constant 1.0xx10^(-4). The equi...

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  15. The percentage error in [H^(o+)] provided by 10^(-8)M HC1, if ionisati...

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  16. H(3)BO(3) is :

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  19. The concentration of CO(2) in atmosphere is 88ppm. If all of the CO(2)...

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