Q: Glass A contains 2 liters of alcohol, and the rest is water. Glass B contains 2 liters of 40% alcoho...
A: Given: Glass A has 2 L of alcohol. Glass B has a total of 2 L solution with 40 % alcohol. And glass ...
Q: What are some errors in the experiment about the Heat of Dissolution of Salt? ...
A: Enthalpies of Solution and DilutionActual changes, like softening or vaporization, and compound resp...
Q: 'N' N. • HCI N. H3C`CH3
A: •Tripelennamine having various applications because it's metabolites show various properties again...
Q: A 1.0 L ideal gas at 15 0C and 2.00 atm contains 1.28 moles of gas. Calculate the new volume, in mil...
A: We can use ideal gas equation to calculate new volume.
Q: 44-50. Proposed what are the surface preparation required in joining aluminum and its alloy?
A: Surface preparation can be defined as the steps and/or procedures that must be followed prior to wel...
Q: 3. For the given molecules 1 H NMR (a) label all the hydrogen atoms, (b) State how many signals are ...
A: 1H-NMR is used to determine the complete structure of the unknown compound. The number of signals in...
Q: What are conjugate pairs and why are they important? Give an example of a conjugate pair
A: Acid and conjugate base . These are chemical species that differ only in one proton (H+) if the prot...
Q: How many different monosubstituted products are possible when ethylcyclopentane reacts with one equi...
A:
Q: What number of molecules (or formula units) are present in 2.93 g of each of the following compounds...
A:
Q: Thermosetting polymers chemically changed at high .temperatures True O False O Electrons spin around...
A: About thermosetting polymers:
Q: What is the name of the organic product created when hex-3-ene is reacted with water in the presence...
A: Hydration of alkene: Alkene gives hydration reactions in presence of an acid catalyst. The reaction ...
Q: [Raturances It has been determined that the body can generate 5500 k) of energy during one fiour of ...
A:
Q: O STATES OF MATTER Finding mass or volume from percent concentration Ketamine, sometimes used as an ...
A:
Q: The acid dissociation constant K, of hydrocyanic acid (HCN) is 6.2 x 10 -10 Calculate the pH of a 3....
A:
Q: The type of Bonding shows in this figure is Nacl- plo lonic Bond O Covalent Bond O Metallic Bond O o...
A: Ionic bond - A bond which involves the transfer of electron from an atom to another atom is called a...
Q: Which of the ff. is NOT true about the activity coefficient? a. It increases as the concentration of...
A: The relationship between activity coefficient γ and concentration (c) can be given as: a=γ×c ...
Q: NaBH, NaBH, OH PCC CH,CI,
A:
Q: In solving an equilibrium reaction for polyprotic acid, what is the most important consideration?
A:
Q: Explain the major difference between the Michaelis-Menten equation and the Briggs-Haldane treatment ...
A: Micheaeli-Menten equation and Brigg-Haldane equation,both two equation describes enzyme Kinetics .
Q: In the laboratory, a general chemistry student measured the pH of a 0.483 M aqueous solution of trie...
A: Given-> Concentration= 0.483M pH = 12.129
Q: picture shows the grabber protein backbone and the 4 Mg++ ions as pink balls. The picture to the rig...
A: We have to tell how Mg2+ held in the cavity of the grabber protein backbone. More specifically we ha...
Q: The percent by mass of nitrogen for a compound is found to be 63.7%. Which of the following could be...
A: Given -> Percent by mass of nitrogen = 63.7%
Q: a. Calculate the molar mass of P205. Molar masS = g/mol %3D b. Calculate the molar mass of Caz (PO4)...
A:
Q: OMEM OMEM но.. но. ÓBn ÓBn A 1. I2. NaH CO3 2. B2CI, DMAP OMEM BzO, Which diastereomer A or B gives ...
A:
Q: The industrial chemical transformation of alkenes into aldehydes involves the usage of CO ligand. (i...
A: This reaction of conversion of alkene into aldehyde with the help of CO in presence of catalyst is k...
Q: What is the pH of a 0.89 M solution of sodium fluoride? Report your answer to 2 decimal places. Your...
A:
Q: Suppose that a corpse was discovered in a motel room at 11:42 PM and its temperature was 80° Fahrenh...
A: Given that
Q: (2) 3luaai What mass of KMNO4 must be dissolved to prepare 1.25 L of O.110 N KMNO4 solution? (K =39 ...
A:
Q: Give clear handwritten Solution: Pressure of 50.0 psi is used to drive hexane through a 4.00 m leng...
A: Length of capillary = 4.00m Diameter of capillary = 7.50 um
Q: Predict the sign of AS° and then calculate AS for each of the following reactions. (This problem req...
A:
Q: C2H4 (g) +302 (g) → 2 CO2 (g) + 2H2O(1) AH = -1411.0 kJ 2C, H6 (9) + 702 (g) → 4 CO2(g) + 6H2O(1) 2H...
A: Enthalpy of formation is the heat change for forming one substance.
Q: a) Briefly describe the meaning of chromophores. b) (i) Depict the graph using Microsoft excel (ii) ...
A: (a) Chromophore is a group which exhibit absorption of electromagnetic radiation in UV or Visible re...
Q: Predict whether each of the following bonds is nonpolar covalent, polar covalent, or ionic. Be and ...
A: The ionic bond is an electrostatic attraction force, formed between the ions and it is a strong bond...
Q: 6.) Given the following information: 2 A(g) + B(g) = AB(g) 2 A(g) + C2(g) =2 AC(g) K1 = 5.0 x 104 K2...
A:
Q: Data Interpretation Instruction: Analyze the table. What can you say about the relationship between ...
A:
Q: At 298.15K the osmotic pressure of the unknown substance was found to be at 2.25x10 Pa. If the conce...
A: Given: Osmotic pressure of the solution = 2.25 × 104 Pa = 2.25 × 104101325 = 0.222057735 atm approx....
Q: Create a WORD PROBLEM about Hess's Law. Show solution.
A: Hess's law asserts that the change in enthalpy in a chemical reaction is the same whether the reacti...
Q: Choosing the right design .reduces corrosion True O False O B.O to PCI5 = 2. True O False O
A: Avoid sharp bends in piping systems and provide thicker sections to reduce impingement effects or co...
Q: What is the true density of Zr, an HCP crystal, in g/cm3? Given: Atomic Number = 40 Atomic Weight =...
A:
Q: 7) A 100.0 mL sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH of the solution...
A: Given, [Ca(OH)2] = 0.10 M Volume of Ca(OH)2 = 100.0 mL [HBr] = 0.10 M a). Determine the pH befor...
Q: Time Altitude Pressure Temperature Volume Moles 9:00 pm 40 km 9.54 x 10 atm 115,580 L 9:10 pm 20 km ...
A:
Q: A) Alkane B Alkene c) Aromatic Hydrocarbon (D Alkyne
A:
Q: If a 3g sample of zinc oxide, 95% ZnO, were treated with 50ml of 1.1230N sulfuric acid in the usual ...
A:
Q: A chemist prepares a solution of copper(II) sulfate (CuSO,) by measuring out 16. umol of copper(II) ...
A: Volume =250 ml = 0.250 L ( 1 L = 1000ml ) Mole = 16 micromole
Q: 3. Nitric oxide (NO) reacts with oxygen gas to form nitrogen dioxide (NO2), a dark-brown gas: 2 NO(g...
A: 2NO(g) + O2 ----> 2NO2(g) Number of moles of NO = 0.886 moles Number of moles of O2 = 0.503 m...
Q: 7. Draw resonance contributors for the following two anions. Indicate which anion is a stronger base...
A: We are required to draw the resonating structure of the given anion and predict the strength of the ...
Q: O CHEMICAL REACTIONS Using molarity to find solute mass and solution volume A chemist adds 1.60 L of...
A: A chemist adds 1.60 L of a 0.0014 mM copper(II) fluoride (CuF₂) solution to a reaction flask. Calcul...
Q: 12) Solid chromium reacts with aqueous copper (II) nitrate to produce chromium (III) nitrate and sol...
A:
Q: From data given below, calculate AH", AS", and AG for the following reaction at 25°C. 6CO,(9) AH -39...
A: Gibbs Energy - Is the maximum work that a thermodynamic system can perform at a constant temperatur...
Q: ANION ELIMINATION TEST OBSERVATIONS ADDED REAGENT(S) OBSERVATIONS Ba(NO3)2 NVR HNO3, Fe(NO3)3 Blood ...
A:
Topic:
a. Differentiate between acidimetry and alkalimetry?
b. Define titer.
Step by step
Solved in 2 steps with 1 images
- Topic: Standardization of acid and base with back titration Note: Include up to 4 decimal places Kindly explain the process Thank you!Which of the following steps MUST be done prior to titration of an analyte? I. Prepare a standardized solution II. Wash the burette with a standardized solution III. Fill the burette to the 50-mL mark IV. Prepare a contrast paper to determine burette volume and titration endpointPart A: Standardization of a Sodium Hydroxide Solution Titration 1 Titration 2 Titration 3 Mass of 125 mL flask 45.849g 46.715g 44.953g Mass of flask and KHP 46.849g 47.745g 46.003g Initial buret reading (mL) 0.5 ml 0.5 ml 0.5 ml Final buret reading (mL) 27.8 ml 26.5 ml 26.7 ml Volume of NaOH used (mL) 45.11 ml 45.06 ml 45.14 ml Calculations Titration 1 Titration 2 Titration 3 Moles of KHP Moles of NaOH Molarity of NaOH Average Molarity of NaOH: _______________
- 3.A sample is known to contain NaOH, NA2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCI ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample?Do you always have to use a primary standard in the standardization of titrant? Why or why not?Molarity of Na2S2O3 (stock solution). 0.100 M Volume of diluted bleach titrated (taken from the volumetric flask). 10ml Initial Burette Reading. 14.80 Final Burette Reading 25.60 Volume of Na2S2O3 used in the titration (mL). 10.80 Moles of Na2S2O3 used in the titration. 1.71 Moles of S2O3–2 used. 1.66 Moles of I2 initially present in titration mixture 0.83 Moles of NaOCl in the diluted bleach titrated. 0.415 Volume of bleach titrated. 1ml Mass of commercial bleaching solution titrated ?
- Molarity of Na2S2O3 (stock solution). 0.100 M Volume of diluted bleach titrated (taken from the volumetric flask). 10ml Initial Burette Reading. 14.80 Final Burette Reading 25.60 Volume of Na2S2O3 used in the titration (mL). 10.80 Moles of Na2S2O3 used in the titration. 1.71 Moles of S2O3–2 used. 1.66 Moles of I2 initially present in titration mixture 0.83 Moles of NaOCl in the diluted bleach titrated. 0.415 Moles of OCl– in the diluted bleach titrated. ?Molarity of Na2S2O3 (stock solution). 0.100 M Volume of diluted bleach titrated (taken from the volumetric flask). 10ml Initial Burette Reading. 14.80 Final Burette Reading 25.60 Volume of Na2S2O3 used in the titration (mL). 10.80 Moles of Na2S2O3 used in the titration. 1.71 Moles of S2O3–2 used. 1.66 Moles of I2 initially present in titration mixture 0.83 Moles of NaOCl in the diluted bleach titrated. 0.415 Volume of bleach titrated. 1ml Mass of NaOCl in commercial bleach titrated. ?Which of the following is a good description of a standard solution as a titrant? a) selectively reactive with the analyte b) only reacts with the matrix c) oxidize when exposed to air d) reacts very slowly but completely
- 5. A 300.0 mg sample containing Na,CO3, NaHCO, and NaOH and inert material either alone or in some combination was dissolved and titrated with 0.1000 M HCI the titration required 24.41 ml to reach the phenolphthalein endpoint. And an additional 8.67 mL to reach the methyl red endpoint. Determine the composition of the sample and calculate the percent of each titrated component.Is the standardization of titrant always the first step in all titrimetric analysis? Why or why not?Gravimetric Analysis. Please include complete solution, thank you. In the gravimetric determination of sulfate in a 0.2841 g sample of pure Na2SO4, a BaSO4 precipitate weighing 0.4604 g was obtained. The weight of the precipitate was smaller than the theoretical one, since some BaSO4 was converted to BaS during the heating process. Calculate the percent of BaS in the precipitate and percent error of the analysis.