Reaction

Tags

Chem/Reaction

Cegep/2

Word count

103 words

Reading time

1 minute

Reorganization of atoms in one or more molecules

Types:

• Precipitation
• Acid-base reaction
• Redox reaction

[!abstract] Stochiometric Mixture
Mixture balanced such that all reagents are consumed (no limiting reagent)

Examples

What volume of a 0.100M $\mathrm{HCl}$ solution is needed to neutralize 25.0 mL of 0.350M $\mathrm{NaOH}$?

$$\begin{array}{rl}{n}_{\mathrm{NaOH}}& =\frac{0.350\mathrm{mol}\mathrm{NaOH}}{1\mathrm{L}}\cdot 25.0\mathrm{mL}\cdot \frac{1\mathrm{L}}{1000\mathrm{mL}}=8.75\times {10}^{-3}\mathrm{mol}\\ n_{\mathrm{Na}{\phantom{A}}^{-}}& =8.75\times {10}^{-3}\mathrm{mol}\mathrm{NaOH}\cdot \frac{1\mathrm{mol}\mathrm{Na}{\phantom{\mathrm{A}}}^{-}}{1\mathrm{mol}\mathrm{NaOH}}=8.75\times {10}^{-3}\mathrm{mol}\mathrm{NaOH}\\ n_{\mathrm{H}{\phantom{A}}^{+}}& =8.75\times {10}^{-3}\mathrm{mol}\mathrm{Na}{\phantom{\mathrm{A}}}^{-}\cdot \frac{1\mathrm{mol}\mathrm{H}{\phantom{\mathrm{A}}}^{+}}{1\mathrm{mol}\mathrm{Na}{\phantom{\mathrm{A}}}^{-}}=8.75\times {10}^{-3}\mathrm{mol}\mathrm{H}{\phantom{\mathrm{A}}}^{+}\\ n_{\mathrm{HCl}}& =8.75\times {10}^{-3}\mathrm{mol}\mathrm{H}{\phantom{\mathrm{A}}}^{+}\cdot \frac{1\mathrm{mol}\mathrm{HCl}}{1\mathrm{mol}\mathrm{H}{\phantom{\mathrm{A}}}^{+}}=8.75\times {10}^{-3}\mathrm{mol}\mathrm{HCl}\\ v_{\mathrm{HCl}}& =\frac{8.75\times {10}^{-3}\mathrm{mol}\mathrm{HCl}}{0.100\mathrm{M}\mathrm{HCl}}=0.0875\mathrm{L}\end{array}$$

Contributors

Ajitani Hifumi

Changelog

Last edited about 2 hours ago

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