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harina [27]
3 years ago
13

Which is a characteristic of weak acids and weak bases?

Chemistry
2 answers:
Lera25 [3.4K]3 years ago
5 0
Ka and Kb values of weak acids and weak bases are small.

This is because weak acids and weak bases do not dissociate completely, favoring the reactants more than dissociating into the product of H+ or OH-.
jeka57 [31]3 years ago
5 0

The answer is A. Ka and Kb values of weak acids and weak bases are small.

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Explanation:

The given data is as follows.

         Heat transfer coefficient (h) = 12W/m^{2}.C

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Hence, formula applied for steady state is as follows.

       (h \times A \times \Delta T)_{air} = \sigma \times A \times (T^{4}_{1} - T^{4}_{2})_{plate}

Putting the given values into the above formula as follows.

       (h \times A \times \Delta T)_{air} = \sigma \times A \times (T^{4}_{1} - T^{4}_{2})_{plate}

        12 \times (T_{2} - 273) = 5.67 \times 10^{-8} \times [(30 + 273)^{4} - T^{4}_{2}]

                  T_{2} = 282.66 K

                              = (282.66 -273)^{o}C      

                              = 9.66 ^{o}C      

Thus, we can conclude that the steady state temperature will be 9.66 ^{o}C.

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