Phenolphthalein is added to a certain mixture. When the mixture was heated, the color turned pink. Which of the following is most likely the certain mixture? Ca2+ + 2 OH- ⇄ Ca(OH)2 ΔHrxn = +2.5 kJ/mol H+ + OH- ⇄ H2O ΔHrxn = -55.85 kJ/mol Both/None of these

Phenolphthalein is added to a certain mixture. When the mixture was heated, the color turned pink. Which of the following is most likely the certain mixture? Ca2+ + 2 OH- ⇄ Ca(OH)2 ΔHrxn = +2.5 kJ/mol H+ + OH- ⇄ H2O ΔHrxn = -55.85 kJ/mol Both/None of these

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter14: Acids And Bases

Section: Chapter Questions

Problem 66QRT: Complete each of these reactions by filling in the blanks. Predict whether each reaction is...

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

Phenolphthalein is added to a certain mixture. When the mixture was heated, the color turned pink. Which of the following is most likely the certain mixture?

Ca²⁺ + 2 OH^- ⇄ Ca(OH)₂ ΔH_rxn = +2.5 kJ/mol

H⁺+ OH^- ⇄ H₂O ΔH_rxn = -55.85 kJ/mol

Both/None of these

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