By watching this video, https://www.youtube.com/watch?v=lgX-7h-mEYw. What is the purpose of NaCl in the experiment? Will the same result be obtained if thereacting solution is not added with NaCl?
Q: 2. One way to determine the concentration of lead (II) in water is by precipitating it via titration…
A: The relationship between Molarity(M) , volume (V) and stoichiometric coefficient (n) of any two…
Q: The (2-aminoethyl)phosphine ligand, acts as a bidentate ligand with metals of Transition. i) How…
A: The structure of (2-aminoethyl)phosphine ligand is
Q: O im H Br O H
A: Ketone has suffix one and aldehyde has suffix al.
Q: The most chemically active component of the soil. Soil Colloids o Soil Solids Soil Humus o o Soil…
A: the correct option is hown below.
Q: Half-reaction E° (V) Br₂(1) + 2e¯ →→→→→→ 2Br¯(aq) 1.080V Cu²+(aq) + 2e¯ →→→→ Cu(s) 0.337V Mn²+(aq) +…
A: Oxidizing agent is the species that oxidizes the other species and itself gets reduced. Reducing…
Q: A 50.0-g block of an unknown substance initially at 177.39 °C was submerged in 40.0 mL of water…
A:
Q: The redox reaction below has a AG value of 230. kJ. Determine the standard cell potential(Eᵒcell)…
A:
Q: For each item, indicate if it is true for galvanic cells only, electrolytic cells only, both or…
A:
Q: Assign the IUPAC names of the following structures H Br محدد O OH H
A:
Q: What other factors do you need to consider when assessing feasibility of titration?
A: The factors are :- i) Titration reactions mixture must be rapid. ii) Reaction mixture must be…
Q: 1. Draw the main enolate that will be formed with the reaction conditions below? 25 °C CH3CH2OH +…
A: An asymmetric carbonyl compound with different alpha hydrogen form two different enolate Here we are…
Q: electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. a. What…
A:
Q: c. Describe the coupling pattern (i.e. doublet, triplet, doublet of doublets, etc.) for the peak at…
A: Solutions- Coupling pattern is the doublet, triplet, the 1H NMR spectrum was obtained on a 300 MHz…
Q: the efficiency of a chromatographic column improves the measure that a.increases the height of the…
A: To determine what improves the efficiency of a chromatographic column:
Q: When the Cu²+ concentration is 4.32x10-4 M, the observed cell potential at 298K for an…
A: Answer: In the given cell reaction Mg is getting oxidized and Cu2+ is getting reduced, therefore Mg…
Q: 140 130 120 110 100 90 80 70 60 50 40 30 20 10 Solubility (g/mL) Potassium nitrate Sodium chloride…
A: The solubility curve given is,
Q: At -6.00 °C the pressure equilibrium constant K = 4.2 x 10³ for a certain reaction. Here are some…
A: At - 6.00 °C , the pressure equilibrium constant, Kp = 4.2 × 105 for a certain reactionHeat…
Q: a. Complete the table below to show the number of bonds broken and formed. Bonds broken number…
A:
Q: is 1.44 M, and the Zn2+ concentration is 9.06x10-4 M ? 1(s)→→→→→ H₂(g) + Zn²+ (aq) V on as written…
A: Cell reaction is 2H+ + Zn -----> Zn2+ + H2 E°cell = E°c - E°a = 0 - (-0.76) E°cell= 0.76 V…
Q: Predict the product of the following reaction. 0000 01 ||| IV E ||| ww F ****** ANASAN NA A 1 kwak…
A: In this question we have to tell the product of the reaction.
Q: Write the Haworth and conformational formulas for anomeric sugars. Explain the relative stabilities…
A: The Haworth conformation for the anomeric sugars are needed to be provided. The relative stability…
Q: (a) What is the difference between a zymogen and an allosteric enzyme? (b) Why would the active…
A: (a) the difference between enzyme and zymogen is that enzyme is a globular protein that catalyses…
Q: How many KJ of energy are released when 6.39 g of Fe reacts with excess O₂? Given the following…
A:
Q: GMU 737664 What is the expected product A for the following intramolecular aldol reaction? O CH3 O…
A: In this question we have to tell the product of the reaction.
Q: The electrode potential is an intensive property such that when the coefficients of the species in…
A: Given: The electrode potential is an intensive property. And the coefficients of the species in the…
Q: What is the calculated value of the cell potential at 298K for an electrochemical cell with the…
A:
Q: Is possible to make a buffer pH 4 at 1mM using methanesulfonic acid and sodium tartrate? Please…
A: To explain: Is it possible to make a buffer pH 4 at 1mM using methanesulfonic acid and sodium…
Q: You want 85 g of KOH to be dissolved in 1.5 liter of solution. What is the normality of the…
A:
Q: A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 × 10²7 g. Use this information to…
A:
Q: A gas exerts a pressure of 600 mmHg at 28°C. What is the temperature at standard pressure
A:
Q: 71. As shown in the following reaction formula, ammonium nitrate reacts with ammonia to produce…
A:
Q: A team of General Chemistry 1 learners are undergoing a science laboratory activity on chemical…
A: A team of General Chemistry 1 learners are undergoing a sciencelaboratory activity on chemical…
Q: Question 1 What is the source of heat in the thermosphere? Be careful and exacting here. the…
A: Answer: There are several types of layers Earth's atmosphere contains those are mentioned below: 1.…
Q: Electrons are produced at the cathode of a voltaic cell. True or False True False
A:
Q: following reaction, when the H₂ pressure is 1.97x10-3 bar, the H+ concentration is 1.22 M, and the…
A:
Q: If a gas with a volume of 10mL and a pressure of 236 torrs inside a dewar flask is opened to an…
A:
Q: (29) Which of the following nuclei decay by of decay ? Explain
A: β-10 decay occur in the nucleus with a high number of neutrons and β+10 decay occurs for the nuclei…
Q: The eqalibrium constant, K, for a redox reaction. 18 related to the standard potentials to, by the…
A: Given: Equilibrium constant for the reaction = 9.10 × 10-4 And the reaction is X (s) + Y+ (aq) → X+…
Q: Standardization of EDTA Solution Weight of pure CaCO3: 0.2514 g % Purity of CaCO3: 98.0% Total…
A: Molarity of a solution is defined as the number of moles of solute present in one litre of a…
Q: 9. Propose a mechanism (curved arrows) for the following reaction, and use that mechanism to predict…
A: Here we have to write the mechanism of the following reaction.
Q: T IVİ. «20. Livin 2 Calculate the magnetic moment of Mn in KMn(NCS)6].
A: Given-> K4[Mn(NCS)6] Spin magnetic moment = √(n(n+2)) BM
Q: 31. What volume of H2 would be produced from the reaction of 225 grams of Zinc under conditions of…
A: Zinc metal reacts with hydrochloric acid to form zinc chloride and hydrogen gas. The equation for…
Q: CH3 o-nitrotoluene CH3 NH, CI NO2 CH3 o-toluidine NH3*,CI CH3 CI 2-chloro-N-o-tolilpropanami NH,HCO,…
A:
Q: The volume of a person's lungs is 600.0 mL at a pressure of 760mmHg. When the lungs expanded to 610…
A: Boyles's law states that, the pressure of the gas is inversely proportional to the volume, provided…
Q: он Tso (9) Give the mechanism ? Is the alcohol acting as the as electrophile or the nucleophile im…
A:
Q: Example. 6.3.How much heat has to be added to a solution of 1 g mol of HC1 in 10 g mol of H₂O to…
A: Given: Inital concentration of HCl = 1 g mol HCl in 10 g mol water. And the final concentration of…
Q: III. THREE RESISTORS ARE CONNECTED IN SERIES R1 = 5 OHM, R2 = 10 OHM. WHAT WILL BE THE VALUE OF THE…
A: Answer: Relation between current, voltage and resistance of the circuit is: R=VI
Q: 3. What is the molar mass of a binary ionic compound (dissociates into a single cation and a single…
A:
Q: How many valence electrons do you have to account for when drawing the Lewis dot structure of PCl5?
A: Valence electron of phosphorus is five and valence electrons of chlorine is seven
By watching this video, https://www.youtube.com/watch?v=lgX-7h-mEYw.
What is the purpose of NaCl in the experiment? Will the same result be obtained if thereacting solution is not added with NaCl?
Step by step
Solved in 2 steps with 1 images
- What is the purpose of NaCl in the experiment? Will the same result be obtained if thereacting solution is not added with NaCl?1. From 17M glacial acetic acid, how would you perform serial dilution to prepare 1.0 M, 0.50 M, and 0.25 M acetic acid solutions? 2. From 0.50 M NaOH solution, how would you prepare (by dilution) 200 mL of 0.1 M NaOH solution?In a similar experiment, the mass of 3 PB tablets was measured to be 3.1823 g. The tablets were crushed, and 2.9801 g of the powder was transferred to a beaker and reacted with HCl. After filtration, the filtrate was transferred to a 50-mL volumetric flask and diluted with water. 10.00 mL of this stock solution was combined with 0.2 M Na3PO4. The resulting precipitate weighed 0.2425 g after drying. What is the mass of BSS per tablet in mg?Round your answer to 1 decimal place.
- Using the term u of KSP experimental procedure the 6 p.m. As you add 5 ml of .004M AgNo to 5ml of .0025M K2CrO4. Is either of these reagents in excess? If so which one?Hi! can anyone here help me to create a schematic diagram about the experiments: " 21. Preparation of Ethyne" by Pdst Chemistry, and "Activity 10: Functional Group Tests for Hydrocarbons" by FRETZ RMT since i dont know what a schematic diagram is, and what processes/contents should be in it. thank youIs a Kd value of 10.16 reasonable for the extraction of benzoic Acid between methylene chloride and water? Please explain.
- A 0.9092 g sample of wheat flour was analysed by the Kjeldahl procedure. The ammoniaformed was distilled into 50.00 mL of 0.02532 M H2SO4. A 7.46 mL back-titration of 0.04917 MNaOH was required. (Note the stoichiometry of your acid and base) Calculate thea. %N (FM=14.007) in the sample,b. %Protein in the sample (factor = 5.70)1. Why is there a need to correct conductivity of the sample solution?2. Cite three possible sources of error in the experiment and discuss their effects on the computed ionization constant of the acetic acid. (See details below----- literature value- Ki, acetic acid= 1.75 x 10^-5). 3. What is the effect of dilution on the fraction of the acetic acid ionized?Please type all of the parts to this question occordingly to the instructions. Here is an example of a formal procedure based off of the experiment presented in Mohrig:Sodium hydroxide (4.6 g) was dissolved in water (25 mL). This solution was added to a 100 mL round bottom flask along with methyl salicylate (2.0 mL) and a stir bar. The mixture was heated at reflux for 15 min and then progressively cooled to 5 °C. The solution was acidified with 3M sulfuric acid (15-20 mL), and the resulting solid was collected by vacuum filtration. The crude salicylic acid was recrystallized from water to yield ???? g of final solid. The melting point and IR were taken to assess purity. Calculate the molarity of the solution of sodium hydroxide that is used.a. M = b. If the original procedure is the base scale (100%), how far are we scaling down the reaction when using 0.75 mL of methyl salicylate? (Example: the original uses 2.0 mL, if we were to use 1.0 mL, we would be scaling the reaction down…
- A 0.9092 g sample of wheat flour was analysed by the Kjeldahl procedure. The ammonia formed was distilled into 50.00 mL of 0.02532 M H2SO4. A 7.46 mL back titration of 0.04917 M NaOH was required. (Note the stoichiometry of your acid and base) Calculate the %N (FM=14.007) in the sample, %Protein in the sample (factor = 5.70)(9.29 × 105/8)-20.81 = with correct sig figsHow is using thiamine as a catalyst rather than cyanide an application of greenchemistry? PROCEDURETo a six inch test tube was added thiamine hydrochloride (0.65 g), followed by water (2mL). The mixture was gently shaken until homogeneous, and then ethanol (7.5 mL)was added. Finally, sodium hydroxide (10%, 1.5 mL) was added and the mixture wasgently stirred to ensure complete mixing.Benzaldehyde (3.8 mL) was then added at room temperature in one portion with gentlestirring. The pH of the resulting reaction mixture was determined and adjusted to >10by dropwise addition of 10% sodium hydroxide. The reaction mixture was then partiallysubmerged in a 65 °C water bath2 and the progress of the reaction was periodicallymonitored by TLC analysis.Once TLC analysis indicated that the reaction was complete, the reaction mixture wascooled to approximately room temperature, and then chilled in an ice-water bath. Theresulting precipitate was collected by vacuum filtration and air-dried. The…