Lesson_4_-_Example_Solutions-2009

Lesson_4_-_Example_Solutions-2009 - Lesson 4 Example 4-1...

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Lesson 4 Example 4-1 Aqueous solutions of sodium hypochlorite (NaClO) can be used in the synthesis of hydrazine (N 2 H 4 ). Hydrazine has often been used as a rocket fuel for engines in the orbital maneuvering system of the space shuttle. A solution is prepared by dissolving 45.0 g of NaClO in enough water to produce exactly 750 mL of solution. What is the molarity of the solution? Basis: 45.0 g NaClO Data: M NaClO = 74.4 g/mol 750 mL Example 4-2 1 NaClO M 806 . 0 L 1 mL 1000 mL 750 mol 605 . 0 mol 605 . 0 mol / g 4 . 74 g 0 . 45 M m n NaClO NaClO NaClO = × = = =
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Lesson 4 The fuel hydrazine can be produced by the reaction of solutions of sodium hypochlorite and ammonia: NaClO( aq ) + 2 NH 3 ( aq ) → N 2 H 4 ( aq ) + NaCl( aq ) + H 2 O( l ) If 750 mL of 0.806 M NaClO is mixed with excess ammonia, how many moles of hydrazine can be formed? If the final volume of the resulting solution is 1.25 L, what will be the molarity of the hydrazine? Basis: 750 mL of 0.806 M
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This note was uploaded on 09/23/2010 for the course CHEM 103 taught by Professor Chem during the Fall '09 term at University of West Georgia.

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Lesson_4_-_Example_Solutions-2009 - Lesson 4 Example 4-1...

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