Subjects

Sections | |||
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Molarity | 23 mins | 0 completed | Learn Summary |

Normality & Equivalent Weight | 24 mins | 0 completed | Learn Summary |

Solution Stoichiometry | 22 mins | 0 completed | Learn |

Solubility Rules | 7 mins | 0 completed | Learn Summary |

Net Ionic Equations | 21 mins | 0 completed | Learn Summary |

Electrolytes | 19 mins | 0 completed | Learn Summary |

Redox Reaction | 32 mins | 0 completed | Learn Summary |

Balancing Redox Reactions | 22 mins | 0 completed | Learn |

Activity Series | 19 mins | 0 completed | Learn |

End of Chapter 4 Problems | 46 mins | 0 completed | Learn |

Additional Practice |
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Dilution |

Redox Reactions |

Calculate Oxidation Number |

Types of Chemical Reactions |

Additional Guides |
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Net Ionic Equation |

Oxidation Reduction (Redox) Reactions |

Oxidation Number |

Solution: How many liters of 0.750 M NH3(aq) do you need to make a 0.50 L of 0.250 M NH3(aq) solution?A. 0.167 B. 0.177 C. 0.681 D. 0.125 E. 0.560

How many liters of 0.750 M NH_{3}(aq) do you need to make a 0.50 L of 0.250 M NH_{3}(aq) solution?

A. 0.167

B. 0.177

C. 0.681

D. 0.125

E. 0.560

We are being asked to find how many Liters of 0.750 M NH_{3} is needed to make a 0.50 L of 0.250 M solution.

When we are **adding water (or solvent) to a solution** to decrease its concentration, we are **diluting **the solution.

When dealing with **dilution **we will use the following equation:

$\overline{){{\mathbf{M}}}_{{\mathbf{1}}}{{\mathbf{V}}}_{{\mathbf{1}}}{\mathbf{=}}{{\mathbf{M}}}_{{\mathbf{2}}}{{\mathbf{V}}}_{{\mathbf{2}}}}$

M_{1} = initial concentration

V_{1} = initial volume

M_{2} = final concentration

V_{2} = final volume

**Calculate the ****initial volume (milliliters needed) of the NH _{3} solution.**

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