a) If you have 85.0 mL of a 0.225 M solution of ammonia, NH3, how many moles of NH4Cl would you need to add to obtain a buffer with a pH of 8.60. Assume that the addition of the NH4Cl does not change the volume of the solution. Note that the pK, of NH3 is 4.74. NH4Cl mol b) What mass of NH4Cl in grams, would need to be added to the original solution to obtain the desired pH? Again, assume that the addition of the NH4Cl does not change the volume of the solution. Mass 80

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Q: each

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A:

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.