Questions: Predicting the products of dissolution The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. Then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water (H2O). Note: "major" chemical species are those present in concentrations greater than 10^-6 mol / L. compound formula major species present when dissolved in water --------- glucose C6H12O6 isopropanol C3H8O nitrous oxide N2O

Predicting the products of dissolution

The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water.

Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. Then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water (H2O).

Note: "major" chemical species are those present in concentrations greater than 10^-6 mol / L.

compound  formula  major species present when dissolved in water
---------
glucose  C6H12O6  
isopropanol  C3H8O  
nitrous oxide  N2O
Transcript text: Predicting the products of dissolution The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. Then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water $\left(\mathrm{H}_{2} \mathrm{O}\right)$. Note: "major" chemical species are those present in concentrations greater than $10^{-6} \mathrm{~mol} / \mathrm{L}$. \begin{tabular}{|c|c|c|} \hline compound & formula & \begin{tabular}{c} major species present \\ when dissolved in water \end{tabular} \\ \hline glucose & $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}$ & $\square$ \\ \hline isopropanol & $\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}$ & $\square$ \\ \hline nitrous oxide & $\mathrm{N}_{2} \mathrm{O}$ & $\square$ \\ \hline \end{tabular}
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Solution

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Solution Steps

Step 1: Identify the nature of each compound
  • Glucose ($\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}$): Glucose is a molecular compound that dissolves in water without dissociating into ions.
  • Isopropanol ($\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}$): Isopropanol is an alcohol that dissolves in water without dissociating into ions.
  • Nitrous oxide ($\mathrm{N}_{2} \mathrm{O}$): Nitrous oxide is a gas that dissolves in water without dissociating into ions.
Step 2: List the major species present in water for each compound
  • Glucose: When glucose dissolves in water, the major species present are water molecules and glucose molecules.
  • Isopropanol: When isopropanol dissolves in water, the major species present are water molecules and isopropanol molecules.
  • Nitrous oxide: When nitrous oxide dissolves in water, the major species present are water molecules and nitrous oxide molecules.

Final Answer

\[ \begin{array}{|c|c|c|} \hline \text{compound} & \text{formula} & \text{major species present when dissolved in water} \\ \hline \text{glucose} & \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} & \mathrm{H}_{2} \mathrm{O}, \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \\ \hline \text{isopropanol} & \mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O} & \mathrm{H}_{2} \mathrm{O}, \mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O} \\ \hline \text{nitrous oxide} & \mathrm{N}_{2} \mathrm{O} & \mathrm{H}_{2} \mathrm{O}, \mathrm{N}_{2} \mathrm{O} \\ \hline \end{array} \]

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