3 years ago

Sugar dissolving in tea is it chemical or physical change?

Chemistry

1 answer:

coldgirl [10]3 years ago

5 0

Answer:

it is a physical change because when you heat up again a solution of sugar and tea you gonna obtain again sugar

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2 years ago

On the basis of the information above, what is the approximate percent ionization of HNO2 in a 1.0 M HNO2 (aq) solution?

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The answer is "2%"

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Equation:

$HNO_2\ (aq) \leftrightharpoons H^{+} \ (aq) + NO_2^{-}\ (aq) \\\\\ K_a = 4.0\times \ 10^{-4}$

$H^{+}=?$

Formula:

$Ka = \frac{[H^{+}][NO_2^{-}]}{[HNO_2]}$

Let

$[H^{+}] = [NO_2^{-}] = x$ at equilibrium

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therefore,

$[H^{+}] = 2.0\times 10^{-2} \ M = 0.02 \ M$

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6 0

3 years ago

Sugar dissolving in tea is it chemical or physical change?​

Sugar dissolving in tea is it chemical or physical change?