객관식
Which one of the following contains the most moles of oxygen atoms?
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3. Chemical Reactions
Stoichiometry
객관식
In the balanced chemical equation for the reaction between ethylenediaminetetraacetic acid (EDTA) and calcium ion (Ca^{2+}), what is the mole ratio of EDTA to Ca^{2+}?
A
4:1
B
1:1
C
2:1
D
1:2
검증된 단계별 안내1
Identify the chemical species involved in the reaction: ethylenediaminetetraacetic acid (EDTA) and calcium ion (Ca^{2+}).
Recall that EDTA is a hexadentate ligand, meaning it can bind to a metal ion through six coordination sites, effectively wrapping around the metal ion.
Understand that in complexation reactions, one EDTA molecule typically binds to one metal ion to form a stable complex.
Write the balanced chemical equation for the complexation: \(\mathrm{Ca^{2+} + EDTA^{4-} \rightarrow [CaEDTA]^{2-}}\).
From the balanced equation, determine the mole ratio of EDTA to Ca^{2+} is 1:1, meaning one mole of EDTA reacts with one mole of calcium ion.
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