1. Solution A has 10mL containing 0.10 M NaCl and 10 M KNO3 while Solution B has 10 mL of 0.10 M NaCl + 10 mL of 0.10 M KNO3. Which solution has greater ionic strength μ?
Q: 6 ml of water used (5 ml of tap water 1ml of buffer) Hard Water Trial 1 Hard Water Trial 2 ...
A: We would use given instructions for calculation to proceed for calculation. For this we would use t...
Q: What is the empirical formula for an unknown organic compound, if the compound contains 75% carbon a...
A:
Q: Given that H2(9) reacts with I2(s) according to the chemical equation H2(g) + I2(s) = 2 HI(g) Kp = 8...
A:
Q: If I put 3.000g of cu how many grams of solid ag would form?
A: Given: Mass of Cu reacting = 3.000 g. Moles of Cu reacting = MassAtomic mass = 3.00063.55 = 0.047207...
Q: Classify each of the following molecules as polar or non polar: a) N2 b)NH2Cl (N is the central atom...
A:
Q: How many milliliters of water should be added to 100 mL of a 1:125 w/v solution to make a solution s...
A: As per bartleyby guidelines i answered only first question so please don't mind and post other quest...
Q: Kw in pure water at 10°C is 5.03 x 10-15. What is the pH of pure water at 10 °C? (the answer should ...
A:
Q: A certain reaction has a rate law of rate= k[C]. The activation energy for this reaction is 3.0000 x...
A:
Q: Write in brief on nucleation and growth.
A: Both nucleation and growth processes occur during solidification when the atomic arrangement changes...
Q: 2. Consider a glycolic acid (HOCH2COOH) and glycolate (HOCH2COO−) buffer system. Write the chemical ...
A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The buffe...
Q: If a minimum of 454.4 kJ/mol is required to remove electrons from Ru atoms on a surface of a sample ...
A:
Q: Calculate the packing efficiency and density of diamond.
A: This question is from solid state chemistry where we are asked to find a)packing efficiency of diamo...
Q: A mechanism for a naturally occurring reaction that destroys ozone is: O3(9) + HO(g) → HO2(g) + O2(g...
A: Reactant is a substance that carry out the reaction. Catalyst is the substance that catalysis the c...
Q: Why is refractive index commonly used within the beverage and food processing industries? What is th...
A:
Q: How many molecules (not moles) of NH3 are produced from 3.78×10−4 g of H2?
A: Given : Mass of H2 = 3.78 x 10-4 gm Molar mass of H2 = 2 gm/mole
Q: Is it necessary to bleach hair prior to application of a hair dye? Explain.
A: Regular hair color is made with hurtful synthetics that are placed straightforwardly on the scalp ea...
Q: Determine how the following changes affect the given equilblirium reaction that is held in a closed ...
A: Question 20 According to Le Chateliers principle, when a system under equilibrium is subjected to a ...
Q: The equilibrium constant, Kp, is 79.9 at 2500 K for the following reaction: XY2(g) + XZ2(g) = 2 XYZ(...
A: ICE table of Reaction XY2 (g) + XZ2 (g) →2 XYZ (g) Initial 0 ...
Q: Consider the reaction C(s) + CO2(g) ⇌ 2CO(g). At equilibrium at 700 K, the total pressure of both ga...
A:
Q: Cd is a heavy metal that leaches at a rate of approximately 0.0012 milligram/liter per year. Conside...
A: This question is better solved by using dimensional analysis concept. It is given that rate of leac...
Q: tion 13 For the reaction, 2X = Y, If 4.0 moles of X and 0.4 moles of Y are introduced into a 4.00L f...
A: The solution is given below -
Q: 4- Give structures of the Grignard reagent and the aldehyde react to yield each of the following alc...
A: structures of the Grignard reagent and the aldehyde or ketone that would react to yield the followin...
Q: The second order reaction A Products takes 13.5 s for the concentration of A to decrease from 0.740M...
A:
Q: How can a mixture of benzoic acid and sodium be separated, given that sodium explodes strongly when ...
A: Answer is as Follows :
Q: what is the reaction that tartaric acid has with water?
A: Tartaric acid is a diprotic acid it's chemical formula is C4H6O6 having two carboxylic group and two...
Q: 25- How to prepare 70% (v/v) Ethanol in water? (Ethanol is absolute, Mwt 46 g/mol) A) By Diluting 14...
A: The concentration in v/v of some solute means the volume of solute that is present in a certain volu...
Q: If the reaction with the following potential energy diagram were catalyzed, the effect would be to: ...
A:
Q: Phosphorus pentachloride decomposes according to the chemical equation PCI, (g) = PCI, (g) + Cl, (g)...
A: Kc ( equilibrium constant ) is the ratio of concentration of products to concentration of reactants ...
Q: Chromium (III) oxide reacts with hydrogen sulfide gas to form chromium (III) sulfide and water. To p...
A:
Q: Q1: What is the density (g/ml) of a 3.6M Sulfuric acid solution that is 29% H,So, by mass (Mwt. = 98...
A: Given 3.6M H2SO4 29% H2SO4 by mass means that 100 g of solution contains 29 g of H2SO4 Mw (H2SO4) ...
Q: 2H20(g) + 3N2(g) = 2N20(g) + N2H4(g) If K, for the above reaction is 781.8 at 200.9 K, what is Kp fo...
A: The general expression: Kp = Kc(RT)delta n can be derived where ∆n = moles of gaseous products - mol...
Q: Consider a saturated solution of barium iodate in 0.025 M BaCl2. For the salt: Ba(IO3)2(s) ⇌ Ba...
A:
Q: Show these chemical reaction and their balance chemical equation. Include photos and a short descrip...
A: Answer is given below the first 3 according to guidelines.
Q: Both technetuim-99 & thallium-201are used to mage heart muscle in patients with suspected heart prob...
A: Radioactive decay is a first order reaction. So we would calculate the percent of both of the isotop...
Q: Nitrogon happen to the concentrations of H CO,& CH3OH at equilibrium if a catalust is added? A) Cata...
A: If a catalyst is added to the reaction, the concentration of H2, CO, and CH3OH at equilibrium will n...
Q: Bromine and water react to form hydrogen bromide and oxygen, like this: 2 Br,(g) + 2 H,0(9) + 4 HBr(...
A:
Q: In the figure on the right are spectra of two continuum light sources. (a) The spectrum on the left ...
A: (e) both (a) and (d) are correct. Deuterium arc lamp - continuous spectrum of deuterium arc la...
Q: 8. How would you describe the solution of the salt formed from the reaction of a weak acid and a str...
A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...
Q: 4. The major ways to utilize, capture, or store the sun's energy are solar thermal, solar voltaic, b...
A:
Q: 2N20(g) + N2H4(9) = 2H20(g) + 3N2(g) If Ke for the above reaction is 36.94 at 197.9 K, what is Kp fo...
A:
Q: 4. In neutral compound, what is the sum of all oxidation numbers of all atoms making up the compound...
A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...
Q: 2) Calculate how you would prepare 1.000 / of a pH 9.50 buffer made from NH3 and NH,CI. You are prov...
A: Solution Given that The calculated quantities of NH4Cl & NH3 need t...
Q: How many moles of oxygen are consumed in burning 1.6 moles of Benzene, C6H6?
A:
Q: Balance the following redox reaction: HNO2 + I-1 →NO + I2 (acidic)
A: The given redox reaction is as follows: A redox reaction is balanced by balancing the mass and char...
Q: A certain nonvolatile hydrocarbon that weighed 1.00 g was dissolved in 50.00 g of benzene. The resul...
A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...
Q: The activation energy for the reaction H2(g) + I2(g) → 2 HI(g) is 167 kJ/mol, and ∆E for the reacti...
A:
Q: Calculate the [OH −] of a solution of 0.1134 M CH 3CH 2NH 3Cl if K b = 6.400e-4 for CH 3CH 2NH 2?
A:
Q: II. Rate Law The following data were collected experimentally from the following reaction. 2 NO + 2 ...
A:
Q: NO2 -C-C-C-C- NH2 -C- -C -
A: Complete solution is given below in next step
Q: Indicate which of the given electronic configurations are true ground state configurations for the r...
A:
1. Solution A has 10mL containing 0.10 M NaCl and 10 M KNO3 while Solution B has 10 mL of 0.10 M NaCl + 10 mL of 0.10 M KNO3. Which solution has greater ionic strength μ?
2. What is the mass balance expression and charge balance expression for a 0.10 M aqueous solution [NH2(CH3)2]Cl? Kb of NH2(CH3)2 = 5.10x10-4
Step by step
Solved in 2 steps
- Dilute solutions of the same weak acid (pK, = 4.5) ranging in concentration from 2 x 10 M to 2 x 10 M (0.002 to 20 mM) are titrated with a strong base that is five times more econcentrated than the acid. %3D At low concentrations of a weak acid, how does the concentration of the acid affect the shape of the titration curve? The shape of the titration curve depends only on the pK, of the acid, not its concentration. The lower the concentration of the acid, the sharper the inflection at the equivalence point. The shape of the titration curve is the same, regardless of the acid's concentration. The higher the concentration of the acid, the sharper the inflection at the equivalence point.A 150.0 mL buffer solution is 0.100 mol L-¹ in (CH3)2NH and 0.135 mol L-1 in (CH3)2NH2 Br. ▾ Part A What mass of HCI will this buffer neutralize before the pH falls below 9.75? (Kb ((CH3)2NH) = 5.40 × 10-4) Express the mass in grams to two significant figures. ΜΕ ΑΣΦ Mass= Submit Request Answer Part B Complete previous part(s) Return to Assignment Provide Feedback 1 ? gWhat is the Qsp of a solution mixture Al(OH)3 formed from 10 mL 1.00M C6H5NH2 and 15 mL 0.10M Al(NO3)3?
- Be sure to answer all parts. A microbiologist is preparing a medium on which to culture E. coli bacteria. She buffers the medium at pH 7.00 to minimize the effect of acid-producing fermentation. What volumes of equimolar aqueous solutions of K,HP04 and KH,PO4 must she combine to make 900.0 mL of the pH 7.00 buffer? Ka values for phosphoric acid: Kal = 7.2 x 10-3 Ka2 = 6.3 x 10-8 Ka3 = 4.2 x 10-13 Volume H,PO,: mL Volume HPO, mL !!The solubility product constant for Hg(IO3)2 is 3.2 x 10-13. What is the Hg2+ concentration of a solution prepared by mixing 50.0 mL of 0.200 M Hg (NO3)2 with a) 50.0 mL of 0.05 M KIO3 ? b) 50.0 mL of 0.4 M KIO3 ? c) 50.0 mL of 0.5 M KIO3 ?The solubility of AgCl in 0.010 M NH3 is equal to the Ksp1/2 of AgCl. True or False?
- A buffer solution after the addition of 20.0 mL of 1.00 M NaOH solution to 500.0 ml ot a buffer solution containing 0.20 M acetic acid (CH3COOH) and 0.30 M sodium acetate (CH3COONA). [Ka= 1.8 x 10-1 What is the new concentration of the conjugate base, CH3COO after buffering? 0.3385 0.2434 0.1172 0.2269 0.4287From the following choose the most appropriate weak base (when added to its conjugate acid) for making a buffer with pH = 4.50 O (CH3)3N (K, = 6.4 x 105) %3D O CgH5NH2 (K = 3.9 x 1010) O C2H5NH2 (Kg = 5.6 x 104) O HONH2 (K, = 1.1x 108) %3D O NH3 (K5 - 1.8 x 10 5)4.Suppose polyprotic acid H3X with Ka1=10-2, Ka2=10-5, Ka3 =10-10 . Answer the following questions for the buffer of 150 ml 0.1 M NaH2X and 50 ml 0.02 M Na2HX A) What is pH?B) Is the reverse reaction H2X-+ + H2O → H3X + OH- significant in determination of pH and why?C)Is the forward reaction HX2- + H2O → X3- + H3O+ significant in determination of pH and why?(Please do not use Henderson Hasselbalch equation!) Need answer for all three subparts Will definitely appreciate your efforts. Thank you.
- If a 0.3 M solution of NaOH was used to titrate 100 mL of 0.3 M solution of CH3COOH (Ka =1.8 x 10 -5) and the following volumes of NaOH were recorded: 102, 97, 99, 98, 101, 106 mL. The pH Value is………………when added 99.0 mL of 0.3 M NaOH The pH of the solution at the equivalence point more than 7 Because................................... Calculate the 99% confidence limits of the mean? And use them to decide whether there is any evidence of systematic error? [ hints: For N=6 and the 99 % confidence interval, the value of t is 4.03].What is the activity coefficient of Hg2 2+ in a solution of 3.3 mM Hg(NO3)2?A solution was prepared by dissolving 1210 mg of K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 775 mL. Calculate(e) the number of millimoles of K+ in 50.0 mL of this solution.(f) ppm Fe(CN)63- .(g) pK for the solution.(h) pFe(CN)6 for the solution.