1. A student must prepare 500.0 mL of a solution containing 0.999 g of solid CuS
ID: 695012 • Letter: 1
Question
1. A student must prepare 500.0 mL of a solution containing 0.999 g of solid CuSO Which of the following statements are FALSE regarding the proper procedure to prepare this solution? I. The 0.999 g of solid CuSO4 is dissolved in a 500.0 mlL volumetric flask containing 500.0 mL of water. Il. The 0.999 g of solid CuSO, is dissolved in a 500.0 mL volumetric flask containing 400 mL of water before dilution to 500.0 mL Il. The 0.999 g of solid CuSO, is placed in an empty 500.0 mL volumetric flask, diluted to 500.0 mL and allowed to dissolve. 2. True or False The larger the equilibrium constant, the farther to the left is the reaction at equilibrium. A large equilibrium constant does not assure the reaction will proceed at an appreciable rate.Explanation / Answer
I --> avoid this, since V = 500 mL + solid might increase/decrease total solution volume
II --> best practice, since it ensures V = 500 mL for solution
III --> avoid this, since addition of water directly to the solid might cause violent reactions/physical changes.
Q2.
a.
false --> if K i slarge, then the products (right side) are favoured
b.
true --> K is only the ratio between products/Reactants, but time is never acounted, therefore, rates might be years/millenia, etc..
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