Problem 4. A receipt of surface water sample is given in Table below: Substance Concentration (mg/L) Total Hardness 1000 mg/L CaCO3 Phenolphthalein acidity 5 mg/L CaCO3 Phenolphthalein Alkalinity 3 mg/L CaCO3 It is known that phenolphthalein alkalinity is only due to CO3²- and phenolphthalein acidity is only due to H₂CO3. Assuming the hardness of sample is because of calcium and magnesium ions, alkalinity-acidity are due to the carbonate species, calculate: a) The pH of sample. b) Temporary and permanent hardness as mg/L CaCO3. c) Total alkalinity and acidity as mg/L CaCO3. Molecular weights (g/mole): Ca = 40, Mg = 24, H = 1, C = 12, 0 = 16

Problem 4. A receipt of surface water sample is given in Table below: Substance Concentration (mg/L) Total Hardness 1000 mg/L CaCO3 Phenolphthalein acidity 5 mg/L CaCO3 Phenolphthalein Alkalinity 3 mg/L CaCO3 It is known that phenolphthalein alkalinity is only due to CO3²- and phenolphthalein acidity is only due to H₂CO3. Assuming the hardness of sample is because of calcium and magnesium ions, alkalinity-acidity are due to the carbonate species, calculate: a) The pH of sample. b) Temporary and permanent hardness as mg/L CaCO3. c) Total alkalinity and acidity as mg/L CaCO3. Molecular weights (g/mole): Ca = 40, Mg = 24, H = 1, C = 12, 0 = 16

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A 0.15 L sample of water has an initial dissolved oxygen level of 8.35 mg/L. After five days in…

A: BOD5=initial dissolved oxygen-final dissolved oxygen(sample volumesample bottle volume)

Q: The specific gravities of solids and carrier fluids of a slurry are usually known, but the specific…

A: Specific gravity is defined as the ratio of the density of solids in the slurry and the density of…

Q: The chlorine demand test conducted in a laboratory for raw water samples is tabulated below. Sample…

Q: For the particles in problem 3, determine the percent removal in a sedimentation basin with a depth…

A: Answer We are given Before flocculation Average diameter = 20 μm Specific gravity S = 2 After…

Q: b) From the following data calculate the carbonate bicarbonate and hydroxide alkalinities.…

A: Methyl orange alkalinity=total alkalinity p=phenolphthaleint=Methyl orange alkalinity

Q: You need to soften water at a 20 MGD potable water treatment facility using lime (Ca(OH)2) and soda…

A: Data Given: Concentration Molecular Weight CO2 6 mg/L 44 g/mol Ca2+ 20…

Q: The BOD3 of a waste water has been measured as 435 mg/1 at a temperature of 25°C. If K₁ = 0.25 per…

Q: EA two-stage distiller system is used to remove TDS from sea water as shown in the figure. The…

A: Given:- two stage distiller To find:- concentration

Q: Solids analyses were conducted on a soybean processing wastewater. 50 ml of wastewater is used for…

A: Given, Volume of sample (V)=50 mL for total solid analysis Volume of sample (V-)=100 mL for…

Q: The amount of chlorine residual remaining when gases start evolving during disinfection and when…

A: The amount of chlorine residual remaining when gases start evolving during disinfectionand when they…

Q: (a) A strain of E. coli bacteria taken from a sample of waste water in a treatment plant are…

A: (a) N = Aekt (i) A/q at t=0 N = 20 So, 20 = A * ek*0 or, A = 20

Q: 3. A liquid boils when its vapor pressure is equal to a. One atmosphere of pressure b. The gage…

A: As per guidelines we need to answer only first question so please repost rest questions separately.

Q: h=1.4, w =3,L= 4.7 alumium block / brass block h=1.4, w =1.7l=2.4 densities (p alumiun 2700kg/m3…

Q: i. Breaking point dosage ii. Design dosage to obtain the residual of 0.4mg/l of the available…

A: This question has been taken from environmental engineering

Q: (c) An analysis of a water sample has produced the following concentrations, as shown in Table 1(c).…

Q: Specific gravity is calculated by the formula: S.G. = density of sample/density of water at a given…

A: Given data: t [°C] ρH2O [g/cm3] 4 1 20 0.99820 25 0.99705 It…

Q: The BODs of a domestic wastewater sample is considered to be about 200 mg/l and the DO in it is…

Q: Which of the following is not an apparatus or supplies for the Plastic Limit ) flat glass plates for…

A: Note:- Hi! Thank you for the question As per the honor code, We’ll answer the first question since…

Q: Water quality indicates that the water contains Na* at 50 mg/L, K* at 30 mg/L, Ca2+ at 80 mg/L, and…

Q: Determine the preak point dosage of chlorine given the data below which was obtained from…

A: Determine the break point dosage of chlorine.

Concept explainers

Integrated Solid Waste Management

Integrated Solid Waste Management (ISWM) is a thorough waste suppression, compost, removal and recycling Program. An effective ISWM system considers how to suppress, manage and recycle solid waste in a manner that is most efficiently to protect human health and the surrounding. ISWM system requires evaluation of public wants and demands and then selecting and merging the most effective waste management activities for the proposed demands. The main ISWM activities for solid waste management are Waste prevention, Recycling and Composting, and Combustion and Removal and waste collection in a properly planned, constructed, managed and mitigated landfill areas. Each of these requires careful designing, financing, accumulation, and delivery of activities.

Question

100%

Problem 4. A receipt of surface water sample is given in Table below:
Substance
Concentration (mg/L)
Total Hardness
1000 mg/L CaCO3
Phenolphthalein acidity 5 mg/L CaCO3
Phenolphthalein Alkalinity 3 mg/L CaCO3
It is known that phenolphthalein alkalinity is only due to CO3²- and phenolphthalein acidity is only
due to H₂CO3. Assuming the hardness of sample is because of calcium and magnesium ions,
alkalinity-acidity are due to the carbonate species, calculate:
a) The pH of sample.
b) Temporary and permanent hardness as mg/L CaCO3.
c) Total alkalinity and acidity as mg/L CaCO3.
Molecular weights (g/mole): Ca = 40, Mg = 24, H = 1, C = 12, 0 = 16

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A water sample contains the following dissolved ions: [Na+] = 75 mg/l [HCO]=250 mg/1 [CH] = 100 mg/l [Ca²+] = 45 mg/l [Mg²+] = 48 mg/1 [A1³+] = 5 mg/1 Atomic weight: H = 1; C = 12; O=16; Na = 23, Ca = 40, Mg = 24; Al = 27; CI = 35.5 The total hardness of the sample in mg// as CaCO3 is
An Analysis of water from a surface stream yields the following results Ca+2=60mg/L HCO3-=115mg/L Mg+2=10mg/L SO4-2=96mg/L Na+=7mg/L NO3-=10mg/L K+=20mg/L CI-=11 mg/L If an error of 10 percent is acceptable, should the analysis be considered complete?
What is the molar concentration of 196 mg/L sulfate acid (H2SO4)? Use mol/L or mmol/L as the unit in your final result.
In determination of Acidity experiment, If the volume of 0.02N NaOH when use Methyl Orange (M.O) is 0.8 mL and 7.8 mL when use Phenolphthalein (Ph.Ph), the volume of sample is 25mL and the EW for CaCO3 is 50. The Mineral Acidity as mg (CaCO3)/L is
CHAPTER 5 Q7. Determine the lime storage volume required for the following conditions: Average water demand = 0.18 m3/s Maximum dosage = 200 mg/L as CaO Shipping time = 1 week Lime is an interruptible chemical Assume the bulk density and purity of lime is the average of the values given in Table 7..
*
From water sample, 25 mg/L HCO3" as CacO3, 10 mg/L C032 as Caco3 and 50 mg/L Ca* as CaCO3 were measured. pH was near neutral. What is alkalinity? () mg/L as Cac03 (*Answer in whole number only)