pH of a 10^(-4) M solution of chlorine added to pure water as 1. NaOCL 2....
pH of a 10^(-4) M solution of chlorine added to pure water as
1. NaOCL
2. HOCl
Homework Answers
Sodium hypochlorite is a yellowish liquid with an active chlorine concentration of 10-15% pH around 13.0. It is not very stable, and when it comes in contact with air, light or high temperatures, the chlorine evaporates and therefore its concentration in water decreases. The chemical reaction with water is:
NaOCl + H2O <--> HOCl + Na + OH-
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pH of a 10^(-4) M solution of chlorine added to pure water
as
1. NaOCL
2....
How many moles of NaOCl must be added to 150 mL of 0.025 M HOCl to...
How many moles of NaOCl must be added to 150 mL of 0.025 M HOCl to obtain a buffer solution with a pH = 7.50? Ka= 2.8×10-8 for HOCl. The answer is 3.3x10-3
The chlorine solution you pour into the water in a swimming pool breaks down into many...
The chlorine solution you pour into the water in a swimming pool breaks down into many different chemicals, the important ones being hypochlorous acid (HOCl) and its conjugate base, the hypochlorite ion (OCl- ). (Ka hypochlorous acid = 3.0 x 10-8 ). A. what is the pKa of the acid? B. The ideal pH for the pool is 7.4. What is the ratio of OCL- to HOCl needed to maintain the swimming pool at a pH of 7.4? C. what...
pH of acetic acid/acetate buffer pH of pure water Pure solution (no additions) Addition of 10...
pH of acetic acid/acetate buffer pH of pure water Pure solution (no additions) Addition of 10 mL of 0.01 M HCI Addition of 10 mL of 0.01 M NaOH Comment on the changes in pH in the acetate buffer as opposed to that of pure water. What does this tell you about the role of a buffer?
5. A solution is made up of 0.2m naocl and .01m hocl, please explain all 5....
5. A solution is made up of 0.2m naocl and .01m hocl,
please explain all
5. A solution is made up of 0.2M NaOCl and 0.1 M HOCl. a) Write the net ionic equation that represents the reaction of this solution with a strong acid. b) Write the net ionic equation that represents the reaction of this solution with a strong base. c) Calculate the pH of this solution.
Biology pH Calculation A solution of OH− ions is added to a beaker of pure water...
Biology pH Calculation A solution of OH− ions is added to a beaker of pure water at 25°C, to a final concentration of 688 mM. Calculate the pH of the solution
How much HOCl (Ka = 2.5x10-8) (HOCl <=> H+ + OCl- must be added to pure...
How much HOCl (Ka = 2.5x10-8) (HOCl <=> H+ + OCl- must be added to pure water to make a solution of pH 4.3?
1) 20. mL sample of 0.20 M HOCl is added to 25.0mL of 0.20M KOH. What...
1) 20. mL sample of 0.20 M HOCl is added to 25.0mL of 0.20M KOH. What is the pH of the solution? -8 HOCl (Ka = 3.5 x 10 ) 2) The ideal pH for the pool is 7.4. What is the ratio of (OCl- ) to (HOCl) needed to maintain the swimming pool at a pH of 7.4? 3) What would be the new pH if you added 0.3 moles of NaOH to 1.0L of the pool water at...
Calculate the pH of a 5.2 x 10-2 M solution of sodium benzoate in otherwise pure...
Calculate the pH of a 5.2 x 10-2 M solution of sodium benzoate in otherwise pure water at 25oC. For benzoic acid, Ka = 6.5 x 10-5 .
1. What is the pH of 65 mL of 0.0685 M HNO2? 2. What is the pH if 22 mL of water is added to the solution from #1?
1. What is the pH of 65 mL of 0.0685 M HNO2? 2. What is the pH if 22 mL of water is added to the solution from #1?
4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of...
4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of the HOCl is dissociated? Assume the temperature is 25°C and pKa- 7.54. Note that the dissociation of hypochlorous acid proceeds as follows:
4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of the HOCl is dissociated? Assume the temperature is 25°C and...
pH of acetic acid/acetate buffer pH of pure water Pure solution (no additions) Addition of 10 mL of 0.01 M HCI Addition of 10 mL of 0.01 M NaOH Comment on the changes in pH in the acetate buffer as opposed to that of pure water. What does this tell you about the role of a buffer?
5. A solution is made up of 0.2m naocl and .01m hocl,
please explain all
5. A solution is made up of 0.2M NaOCl and 0.1 M HOCl. a) Write the net ionic equation that represents the reaction of this solution with a strong acid. b) Write the net ionic equation that represents the reaction of this solution with a strong base. c) Calculate the pH of this solution.
4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of the HOCl is dissociated? Assume the temperature is 25°C and pKa- 7.54. Note that the dissociation of hypochlorous acid proceeds as follows:
4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of the HOCl is dissociated? Assume the temperature is 25°C and...
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