Consider the titration of 50.00 mL of 0.160 M NH3 with 0.200 M HCl. Calculate the pH at the following volumes of the titrant: VT = 0.00 (Initial Stage) VT = 20.00 VT = 30.00 VT = 40.00 (Equivalence Point Stage) VT = 45.00 Kb = 1.76 x 10-5
Q: In the experiment performed for the determination of cholesterol, the function of the calibration…
A: Clinical chemistry mainly makes use of chemical processes that helps in measuring the chemical…
Q: A saline solution (used in intravenous drips for patients who cannot take oral fluids) contains…
A: The normal saline is 0.9%. This means that there is 0.9 g of salt (NaCl) per 100 ml of solution, or…
Q: The local anesthetic procaine hydrochloride can be administered by local injection. If the procaine…
A: Drug Medication has physiological effect and causes significant changes in the body. Factors…
Q: Calculate the pH for a mixture of 0.5 mole of benzoic acid and one mole of sodium benzoate. The pK,…
A: The correct answer is option,g. = 4.2
Q: You record the absorbance of your unknown BSA sample at 0.276. What is the concentration in ug/mL of…
A: Standard curve can be used to determine the concentration of unknown sample by determining their…
Q: Calculate the amount of dextrose and sodium chloride in 750 mL of D5NS.
A: DSNS solution is Dextrose Sodium Chloride Solution. 5% Dextrose and 4.5% Sodium Chloride is normally…
Q: Calculate the pH of the following buffers containing; 2.95M HC2H3O2 and 1.5M NaC2H3O2 ka = 1.8X10 ka…
A: According to Handersen Hasselbalch equation pH can be calculated using the following formula pH= pKa…
Q: As a technician in a large pharmaceutical research firm, you need to produce 200. mL of 1.00 M…
A: Given Values: pH of the potassium phosphate buffer required = 6.96 pKa value of the potassium…
Q: Titration of a 12.0 mL solution of HCl requires 22.4 mL of 0.12 M NaOH. What is the molarity of the…
A: Molarity is considered as the moles of solute present in the solution.
Q: The pH of human blood is buffered at 7.35 to 7.45. If the [OH-] of the blood sample is 6.3x10-6,…
A: Appropriate pH levels in and around living organisms and cells are essential for life on Earth. A pH…
Q: You need to prepare an acetate buffer of pH 5.43 from a 0.621 M acetic acid solution and a 2.95 M…
A: At equilibrium 0.40875 - x moles of acid x moles of its conjugate base. Initial moles of CH3COOH…
Q: The vapour pressure of water at blood temperature is 47 Torr. What is the partial pressure of dry…
A: Vapour pressure is a measure of the tendency of a material to change into the gaseous or vapour…
Q: Rank the following aqueous solutions in order of increasing vapor pressure. work for this question.…
A: Several physical properties such as boiling point and melting point change depending on the number…
Q: How many grams of dextrose are contained in a 250 ml intravenous infusion of a dextrose injection…
A: Given : 60 g dextrose present in 100 ml IV infusion
Q: Write the chemical equation for the carbonic acid–bicarbonate buffer system?
A: When a strong acid is introduced into a body, buffers take care of it. Buffers mainly act as…
Q: What is the relationship betweenpKa and the useful range of a buffer?
A: The strength of an acid in a solution can be expressed in terms of the acid dissociation constant…
Q: Biven that the reaction takes place with 100% yield, how many mi of acetic anhydride is seeded for…
A: Limiting reagent is the substances that limits the production, Here the salicyclic acid limiting…
Q: In the experiment performed for the determination of cholesterol, the function of the calibration…
A: The calibration curve for a substance within a specified range gives the relationship between the…
Q: Determine the mass of baking soda (84 g/mol) needed to completely react with 531mL of vinegar.…
A: Acid and base react to produce salt and water. In some reactions, gas may also be released (hydrogen…
Q: What is the m/v % concentration of a solution of LiCl with a density of 2.07 g/mL in 40.0 mL of…
A: Given Values: Mass or weight of LiCl = 2.07 grams The volume of the solution = 40 ml The density of…
Q: What is the final concentration if 75 mL of a 3.5 M glucose solution is diluted to a volume of 450…
A: Dilution is the process of reducing the concentration of a given solute in its solution. It can be…
Q: give the respective the TOTAL DILUTION FACTOR of respective serial dilutions. show complete…
A: Introduction: A serial dilution is any dilution in which the concentration decreases by the same…
Q: determine the pKa of the acid and ph of the buffer sol'n of a buffer mixed with 0.1 M tris and 0.5 M…
A: Buffer solutions often are weak acid/strong acid and conjugate base. buffers resist the change…
Q: Bacteria that have a composition of CSH702N. Determine the BOD for 30mg/L, following the following…
A: Microbes, which are tiny and nearly invisible, have had a huge influence on society since the…
Q: At what pressure in atm does ethane (C₂H₆) have a density of 37.2 g/L at 75.0 °C?
A: The pressure of the ethane gas can be calculated by the ideal gas equation. PV = nRT Number of moles…
Q: Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NAOH.…
A: Glycine-Sodium hydroxide buffer is a common buffer which has good buffering capacity. This buffer…
Q: Calculate the enthalpy of vaporization at the normal boiling point (760 mmHg) of the liquid(water,…
A: The enthalpy of vaporization also known as heat of vaporization or heat of evaporation is the amount…
Q: a. calculate the volume of 0.1 M H2PO4– required to prepare 100 mL of your assigned buffer. b.…
A: A buffer solution is an aqueous solution consisting of a mixture of weak acid and it's conjugate…
Q: What would be the working stock concentration (in molarity) if you diluted 250 uL of a stock…
A: Molarity is defined as the number of moles dissolves in 1000 ml of the solution.
Q: From the Henderson-Hasselbach equation, calculate the ratio of dihydrogen phosphate (H2PO4-) and…
A: The Henderson-Hasselbalch equation can be used to determine the pH of the buffer solution. The pH is…
Q: Write the equations for reaction of this buffer with a small amount of HNO3 and with a small amount…
A: Nitric acid is a strong acid and sodium hydroxide is a strong base, both are considered as strong…
Q: Consider a buffer solution that contains 0.55 M NH2CH2CO2H and 0.35 M NH2CH2CO2Na.…
A: NOTE: since you have asked multiple question, we will solve the first question for you. if you want…
Q: Mixing 50.0 mL of 0.200 M Na2HPO4 with 50.0 mL of 0.120 M HCI results in a buffer solution composed…
A: HCl is a strong acid. It is highly corrosive
Q: Given the equation of the line, y=150x-8.1221 (cells per mL is in 10^8), what is the CFU per mL of…
A: Spectrophotometry enables us to calculate the concentration of a species in a solution by measuring…
Q: Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NaOH.…
A: Molar concentration is a measure of the concentration of a chemical species, in particular of a…
Q: Consider the fully developed flow of Citric acid (50% aqueous solution) at 50 °C through a…
A: Viscosity is defined as the resistance of one layer of a fluid to shearing by another. It is usually…
Q: A concentrated lidocaine solution contains lidocaine 1 g/5 mL. How many milliliters of this…
A: Given: concentrated lidocaine solution: 1 g/5 mL. Needed concentration of lidocaine: 8 mg/mL =…
Q: At -47°C the vapor pressure of ethyl bromide is 10 mmHg, while that of ethyl chloride is 40 mmHg.…
A: Given : Mole fraction of ethyl chloride = 0.80 Vapor pressure of ethyl bromide = 10 mmHg Vapour…
Q: What is the total anion concentration (in mEq/L) of a solution that contains 5.0 mEq/L Na+ , 12.0…
A: Introduction: The ionic concentration is the mole ratio between the dissolved substance and the…
Q: How many moles of HCl are there in 75.0 mL of 0.160 M HCl?
A: Molarity can be stated as the soluble moles of solute, which is dissolved per liter of solution.
Q: KCI for injection contains 40 mEq in 20 mL. An order requires 15 mEq, how many mL are needed?
A: KCI for injection is a drug which is used to treat patients with a deficiency of potassium. This…
Q: If there are 15 mL in one tablespoon, how many milliliters are contained in 3.5 tablespoons of a…
A: 1 tablespoon contains 15ml of medication (Given) 1 tablespoon = 15ml (a) 3.5 tablespoon of liquid…
Q: Calculate the mass of a liquid with a density of 3.2 g/mL and a volume of 25 mL
A: The amount of matter present in a substance is defined as its mass. It is independent of its…
Q: A saline solution contains 1.00 g of NaCl (molar mass = 58.55 g/mol) in 75.8 mL of solution.…
A: Given Values: Weight of the NaCl used to prepare saline solution = 1 gram The total volume in which…
Q: By a stoichiometric calculation, determine the pH of a buffer solution prepared by dissolving 25.5 g…
A: The equation that relates the pH of an aqueous solution of an acid to the acid dissociation constant…
Q: Calculate the molarity of dilute Ca(OH)2 solution if the titration of 30.00 mL of 0.05231 M HCl…
A: Given : 30.00 mL of 0.05231 M HCl For this , n 2=1 as 1 hydrogen ion is present V2= 30 ml M2 =…
Q: In an experiment, separation of albumin from chicken liver was attempted at 31%, 58%, and 65%…
A: Ammonium sulphate is commonly used for protein precipitation, separation, and crystallization.…
Consider the titration of 50.00 mL of 0.160 M NH3 with 0.200 M HCl.
Calculate the pH at the following volumes of the titrant:
VT = 0.00 (Initial Stage)
VT = 20.00
VT = 30.00
VT = 40.00 (Equivalence Point Stage)
VT = 45.00
Kb = 1.76 x 10-5
Trending now
This is a popular solution!
Step by step
Solved in 8 steps
- A 5% dextrose in 1/2 normal saline (D5 1/2 NS) solution is commonly administered to patients needing post-operative IV fluids. How could you prepare 500 mL of this solution? Dextrose is 5% (m/v) and the NaCl is 0.45% (m/v).A concentrated lidocaine solution contains lidocaine 1 g/5 mL. How many milliliters of this injection should be used to prepare a 500 mL IV infusion containing 8 mg/mL of lidocaine in D5W? Do not round.PROBLEM 12.27 (a) Use Table 12.5 to calculate the osmotic pressure of the hemodi- alysis solution at 25 °C. (b) If the osmotic pressure of blood at 25 °C is 7.70 atm, what is the direction of solvent movement across the semipermeable mem brane in dialysis? (Blood to dialysis solution or dialysis solution to blood)
- An IV infusion is to contain 40 mEq of potassium ion and 10 mEq of sodium ion in 500 mL of D5W.Using a 20% w/v potassium chloride injection (MW 74.5, valence of 1) and 0.45% sodium chlorideinjection (MW 58.5, valence of 1), how many milliliters of each should be added to the 500mL bag ofD5W to supply the required ions?As a technician in a large pharmaceutical research firm, you need to produce 200. mL of 1.00 M potassium phosphate buffer solution of pH = 6.96. The pKa of H2 PO4 is 7.21. %3D You have the following supplies: 2.00 L of 1.00 M KH2PO4 stock solution, 1.50 L of 1.00 M K2HPO4 stock solution, and a carboy of pure distilled H2O. How much 1.00 M KH2PO4 will you need to make this solution? Express your answer to three significant digits with the appropriate units. > View Available Hint(s) HẢ Volume of KH2PO4 needed = Valıxe Units SubmitThe material to be heated is in a long, cylindrical tube, and is viscous enough that any flow inside the tube can be ignored, i.e. the heating is by conduction alone). Also, consider the glass of the tube to be very thin so its thermal resistance can be ignored. The tube diameter is 1 cm and the properties of the material are the same those of water, given by 0.64 W/m*K, 1000 kg/m3, and 4180 J/kg*K, for thermal conductivity, density, and specific heat, respectively. The water bath temperature is 65 °C, and the initial temperature of the material is 27 °C. Without the agitation of the water bath, the heat transfer coefficient can be considered to be 128 W/m2*K. Considering the tube to be a long cylinder, how long does it take for the coldest point to heat up to a temperature corresponding to 99% of the total possible temperature increase? If the surrounding how water is agitated using a stirrer, leading to a considerably large surface heat transfer coefficient, how long does it…
- Using the formula V₁D₁ = V₂D2, what volume of a 1/100 (10-2) dilution would you need to produce 100 mL of a 1/10000 (10-4) dilution? (Note: provide your answer in decimal format to three decimal places.)A vial containing 400 mg hydrocortisone sodium succinate powder for injection is to be reconstituted to produce 8 mL of injection. What is the amount of Water for Injections, BP that should be added to the powder? The displacement volume of hydrocortisone sodium succinate is 0.05 mL/100 mg.how many grams of sr(no2)2 are needed to make 200 ml of 0.300M solution of sr(no2)2
- If 400 mL of a 20% w/v solution were diluted to 2 L, what would be the finalpercentage strength?a) The total amount excreted into urine as unchanged drug after an oral tablet (A) of 50 mg was 36.4 mg. After an oral capsule dose (B) of 25 mg the Uo was 20.3 mg. Calculate the relative bioavailability of the tablet A with respect to capsule B. If the absolute bioavailability of the oral capsule is determined to be 0.86 calculate the absolute bioavailability of the tablet dosage form. You are required to list the given data, formula and steps for calculationsCalculate the elution volume of blue dextran (blue), myoglobin (red), and Bromocresol purple (purple) in the gel filtration chromatography below with a flow rate of 2.5 mL/min. (Take note that the black colored test tubes represent colorless eluents)