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What does the term isotope mean?

Atoms of the same element possessing the same numbers of protons and electrons, but different numbers of neutrons in the nucleus.

Answered by Alexander H. • Chemistry tutor

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Q3. A third beaker, C, contains 100.0 cm^3 of 0.0125 mol/dm^3 ethanoic acid ( Ka = 1.74 × 10^−5 mol/dm^3 at 25 ºC). Write an expression for Ka and use it to calculate the pH of the ethanoic acid solution in beaker C.

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