Engineering, 18.04.2020 04:11 Savagepanda911
The label on a bleach bottle states that it contains 5.25% (by mass) sodium hypochlorite (NaOCl). Assume that the bleach is manufactured by adding this chemical to otherwise pure water. Take the density of bleach to be the same as that of pure water, 1.0 g cm^-3. Assume that the NaOCl dissociates completely and the pKa for hypochlorous acid is 7.6.
a. What is the pH of bleach?
b. Bleach can be used as an emergency disinfectant for example, for water after an earthquake. Assume that the target dose of free residual chlorine (HOCI + OCI-) to be added is 50 g m^-3. How much bleach (in cm^3) would you add to 1 L of water to disinfect it?
Answers: 1
Another question on Engineering
Engineering, 04.07.2019 18:20
An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.
Answers: 3
Engineering, 04.07.2019 18:20
Wiy doeres rere okhn a pump whon working betwon the same pressure range?
Answers: 2
Engineering, 04.07.2019 19:10
The proportional limit is always greater than the yield strength for a material. a)-trune b)- false
Answers: 3
Engineering, 04.07.2019 19:20
In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.
Answers: 3
You know the right answer?
The label on a bleach bottle states that it contains 5.25% (by mass) sodium hypochlorite (NaOCl). As...
Questions
Mathematics, 13.12.2021 21:30
Mathematics, 13.12.2021 21:40
Social Studies, 13.12.2021 21:40
History, 13.12.2021 21:40
Mathematics, 13.12.2021 21:40
Mathematics, 13.12.2021 21:40
Mathematics, 13.12.2021 21:40
Business, 13.12.2021 21:40
SAT, 13.12.2021 21:40
Computers and Technology, 13.12.2021 21:40
History, 13.12.2021 21:40
