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0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is?
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0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8....
Calculation of pH of Solution Containing 0.125 mole of CaA2
Given:
Step 1: Calculate the concentration of CaA2 in the solution.
Step 2: Calculate the concentration of H+ ions in the solution using the dissociation constant of HA.
Step 3: Calculate the pH of the solution.
Therefore, the pH of the solution containing 0.125 mole of CaA2 is 1.7.
Given:
- Amount of CaA2 = 0.125 mole
- Volume of solution = 0.5 litres
- Ka of HA = 8.0 x 10^-4
Step 1: Calculate the concentration of CaA2 in the solution.
- Moles of CaA2 = 0.125 mole
- Volume of solution = 0.5 litres
- Concentration of CaA2 = Moles of CaA2 / Volume of solution
- Concentration of CaA2 = 0.125 mole / 0.5 litres
- Concentration of CaA2 = 0.25 M
Step 2: Calculate the concentration of H+ ions in the solution using the dissociation constant of HA.
- Ka of HA = 8.0 x 10^-4
- HA + H2O ⇌ H3O+ + A-
- Let x be the concentration of H3O+ ions produced when the HA dissociates.
- Ka = [H3O+][A-] / [HA]
- 8.0 x 10^-4 = x^2 / (0.25 - x)
- Assuming x < 0.25,="" simplify="" the="" equation="" />
- 8.0 x 10^-4 = x^2 / 0.25
- x = 0.02 M
- Therefore, the concentration of H+ ions in the solution is 0.02 M
Step 3: Calculate the pH of the solution.
- pH = -log[H+]
- pH = -log(0.02)
- pH = 1.7
Therefore, the pH of the solution containing 0.125 mole of CaA2 is 1.7.
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0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is?
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0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about 0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is?.
0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about 0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 0.125 mole of CaA2 are present in 0.5litres solution if Ka of HA is 8.0x10^-4 and salt CaA2 is completely ionized thr ph of solutions is?.
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