Questions from General Chemistry


Q: If electricity of sufficient voltage is passed into a solution of potassium

If electricity of sufficient voltage is passed into a solution of potassium iodide in water, a reaction takes place in which elemental hydrogen gas and elemental iodine are produced, leaving a solutio...

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Q: Write balanced equations showing how three of the common strong acids ionize

Write balanced equations showing how three of the common strong acids ionize to produce hydrogen ion.

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Q: Along with the three strong acids emphasized in the chapter (HCl

Along with the three strong acids emphasized in the chapter (HCl, HNO3, and H2SO4), hydrobromic acid, HBr, and perchloric acid, HClO4, are also strong acids. Write equations for the dissociation of ea...

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Q: When writing the chemical equation for a reaction, how do you

When writing the chemical equation for a reaction, how do you indicate that a given reactant is dissolved in water? How do you indicate that a precipitate has formed as a result of the reaction?

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Q: What is an oxidation–reduction reaction? What is transferred during

What is an oxidation–reduction reaction? What is transferred during such a reaction?

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Q: Give an example of a simple chemical reaction that involves the transfer

Give an example of a simple chemical reaction that involves the transfer of electrons from a metallic element to a nonmetallic element.

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Q: The thermite reaction produces so much energy (heat) that the

The thermite reaction produces so much energy (heat) that the iron is initially formed as a liquid. 2Al(s) + Fe2O3(s) 2Fe(s) + Al2O3(s) Describe the transfer of electrons for both...

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Q: If atoms of the metal calcium were to react with molecules of

If atoms of the metal calcium were to react with molecules of the nonmetal fluorine, F2, how many electrons would each calcium atom lose? How many electrons would each fluorine atom gain? How many cal...

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Q: If oxygen molecules, O2, were to react with magnesium atoms

If oxygen molecules, O2, were to react with magnesium atoms, how many electrons would each magnesium atom lose? How many electrons would each oxygen atom gain? How many magnesium atoms would be needed...

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Q: For the reaction Mg(s) + Cl2(g)

For the reaction Mg(s) + Cl2(g) MgCl2(s), illustrate how electrons are gained and lost during the reaction.

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