Problem: 100.0 mL of a 0.50 M aqueous NH3 solution is mixed with 200.0 mL of 0.25 M aqueous HBr. At 25 °C the mixture will have a pH ofa. 5.02b. 4.88c. 3.72d. 6.14e. 6.57

FREE Expert Solution

We’re being asked to calculate the pH of a solution made by mixing 100.0 mL of 0.5 M NHwith 200.0 mL of 0.250 M HBr 

We will calculate the pH of the solution using the following steps:

Step 1. Write the chemical equation for the reaction between NH3 and HBr.
Step 2. Calculate the initial amounts of NH3 and HBr in moles before the reaction happens.
Step 3. Construct an ICF Chart.
Step 4. Calculate the new concentration of the species left in the solution.
Step 5. Calculate pH.

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Problem Details

100.0 mL of a 0.50 M aqueous NH3 solution is mixed with 200.0 mL of 0.25 M aqueous HBr. At 25 °C the mixture will have a pH of

a. 5.02

b. 4.88

c. 3.72

d. 6.14

e. 6.57

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