I made some titrations and the calculated molarity of HCI was 0.096, 0.097 and 0.098. The nomical concentrsrion of HCl is 0.1. How can I explain my results by comparing it to the nominal concentration if my confidence intervals don't include the nominal concentration?
Q: The base dissociation constant (kb) of RNH * 2(aq) is 4.6 * 10 ^ - 4 , Sketch the titration curve…
A:
Q: Show the reaction mechanism for the intramolecular openings of epoxides under basic or acidic…
A:
Q: Provide systematic names for the following compounds.
A: When there are two cyclic rings, the ring that contains the functional group is the parent ring, and…
Q: Macmillan Learning Step 2: If the epoxide is asymmetrical, the nucleophile will attack at the less…
A: The objective of this question is to determine the product of the reaction of an asymmetrical…
Q: What are the products formed in the following sequences? Draw the mechanism and specify their…
A: A question based on reactions of alkenes. The hydrobration-oxidation product for the given cyclic…
Q: B-D-Glucose is the six-carbon sugar with all nonhydrogen groups equatorial. Which structure is it? *…
A: -D-glucose is a simple sugar and a monosaccharide. It is one of the most important carbohydrates and…
Q: The nonvolatile, nonelectrolyte estrogen (estradiol), C18H24O2 (272.4 g/mol), is soluble in diethyl…
A: The objective of the question is to find out the amount of estrogen in grams that is needed to…
Q: Draw the major organic product of the Bronsted acid-base reaction. Include all lone pairs and…
A: The Bronsted-Lowry acid-base theory states that the acid is a substance that gives H+ ions and the…
Q: Do not give handwriting solution.
A: If the Lewis structure of a molecule or ion cannot be explained by a single structure then more than…
Q: HO C NH 2 -CH-CH 2 -CH 2 -C Glutamic acid 5-5-5 SH CH 2 C1O NH —CH —C |NH —CH 2-C OH Glycine The…
A: are organic compounds that contain both amino and carboxylic group.
Q: + -D AICI 3 + KMnO4 -D H₂SO4 i O
A:
Q: D Which diagram(s) show ionization? OA U 0 F U D B E A OC e B E C F
A: Ionisation is the process by a neutral gaseous atom converted to A charged cation by removing the…
Q: < Consider the equilibrium system described by the chemical reaction below. Determine the…
A: In this question it is given :Kc = The equilibrium concentration of H2O = 0.11 MThe equilibrium…
Q: Determine the number of excess moles of the excess reagent in the following reaction: 2.40 mol of…
A: Given:moles of Mg = 2.40 molmoles of oxygen = 1.65 molWe need to calculate the number of excess…
Q: What are the redcuible representation for C4V of [MnI(CO4)] and for C2v of IF3?
A: Assign a coordinate system to the molecule such as x, y and z axes passing through the center of the…
Q: Draw lewis structure for and electronic geometry for CH3OH
A: In drawing Lewis structure, total valence electrons of all the atoms should be equal to total…
Q: Determine the reaction quotient for the reaction shown below. C5H₁2 +80₂5 CO₂ + 6H₂O 12 Select the…
A: The direction in which the reaction proceeds to reach equilibrium can be predicted by determining…
Q: Do not give handwriting solution.
A: To solve this problem we have to know about elevation in boiling point of given solutions. We know…
Q: Suggest suitable method to Synthesis, using retrosynthetic. analysis H H ph Give retrosynthesis and…
A:
Q: Classify each of these soluble solutes as a strong electrolyte, a weak electrolyte, or a…
A: Strong electrolyte:An electrolyte that decomposes completely of its component ions in liquid state…
Q: Compared to other molecules of similar molecular mass, what property causes the boiling point of…
A: Boiling point is defined as the temperature at which vapor pressure is equal to atmospheric…
Q: 15) Identify the products of the 1,4-addition for the following reaction. ŏ + En I Br A) II and III…
A: In the above given example 1,4-addition reaction takes place in which the hydrogen (H) atom and the…
Q: Rank the numbered hydrogen atoms from highest to lowest pKa 2 H₂C 1 1>2>3>4 3>2>1>4 4>3>2>1 4>1>2>3…
A: Acidity is defined as the ability of a molecule to release protons.If a compound easily donates…
Q: The rate constant for a reaction at 25.0°C is 0.010 s-1 and its EA is 35.8 kJ. Find the rateconstant…
A: The objective of this question is to find the rate constant of a reaction at a different temperature…
Q: Use bond energies to calculate the enthalpy of reaction: H-C-0-H H Select one: a. -380 kJ O b. 365…
A: Enthalpy of reaction can be calculated using bond energies->H = Bond energy of bonds broken -…
Q: Calculate the amount of heat needed to melt 140. g of ice (H₂O) and bring it to a temperature of…
A: To convert Ice into liquid form of water and taking its temp. down to given above - We should first…
Q: Which of the following is the most stable conformation of cis-1-ethyl-3-isopropylcyclohexane?…
A: In chair conformation of cyclohexane, if single substituent group is present other than hydrogen…
Q: Which of the following bonds would be the most polar without being considered ionic? Mg-O s OOO O…
A: The objective of the question is to identify the most polar bond among Mg-O, S-O, and N-O without it…
Q: Draw the major organic product of the Bronsted acid-base reaction between the compounds shown below.…
A:
Q: Write the major organic products of the following sequences of reactions. Refer to your reaction…
A: In organic chemistry, "hv" typically represents the symbol for a photon of light. The symbol "hv" is…
Q: A certain reaction is second order in N₂ and first order in H₂. Use this information to complete the…
A: The objective of the question is to find the initial rate of reaction for the given concentrations…
Q: a) Methyl phosphate dianion, CH3OPO3²- (3) b) Nitrate anion, NO3- (3) 2-
A: When all the properties of a molecule cannot be explained by a single structure , we draw more than…
Q: Explain how a solution of butanoic acid and potassium butanoatecan function as a buffer…
A: The objective of the question is to understand how a solution of butanoic acid and potassium…
Q: 19.65 Identify the starting materials needed to make each of the following acetals: C% a. b. A OEt
A: The question is based on the concept of organic synthesis.We need to synthesize the product using…
Q: Give the IUPAC name for the following compound
A: According to IUPAC Nomenclature,Name of alicyclic compounds are obtained by adding prefix cyclo to…
Q: O ZI Br H3O+ heat
A: -> Secondary amines are used for protection of aldehydes and ketones from which enamines are…
Q: Show all work, thank you!
A:
Q: Which ions are within the Calcium-group? Please describe the precipitation and further separation of…
A: The separation and identification of cations within a group is a crucial aspect of qualitative…
Q: what happens when you add deionised water as buffer solution
A: The objective of this question is to explain what happens when deionized water is added as a buffer.
Q: Select True or False: The definition of a mole is an Avogadro's number of a specific entity, such as…
A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro…
Q: Calculate the amount of heat needed to melt 140. g of ice (H₂O) and bring it to a temperature of…
A: The objective of this question is to calculate the total amount of heat required to melt 140 g of…
Q: Consider the phase diagram below: 1,5 atm P 1 atm 0.5 atm L 20%C -10°C Back 10°C A 20 C D T III.…
A: Answer:-This question is answered by using the simple concept of phase diagram of the given…
Q: A saline solution contains 0.980 g of NaCl (molar mass= 58.55 g/mol) in 81.6 mL of solution…
A:
Q: Which of the following is NOT a redox reaction? © 2 Nal(s) + Cl₂(g) ---> 2 NaCl(s) + 12(g) ○ Cl₂(g)…
A: The objective of this question is to find which of the given reactions is not a redox reaction.
Q: Question 2. Draw a complete reaction mechanism including electron-pushing arrows for each step;…
A: In the above given reaction a conjugated diene is treated with DBr in the presence of peroxide which…
Q: The rate of a certain reaction is given by the following rate law: rate=k[H₂][1₂] Use this…
A: The rate expression for a certain reaction given is ,rate = k[H2][I2]Rate law Rate law gives the…
Q: For the gas phase decomposition of ethyl chloroformate, CICOOC₂H5→ C₂H5 Cl + CO2 the rate constant…
A:
Q: Double bonds may be conjugated, meaning that there is one single bond between them. Identify all the…
A: A question based on molecules. For the given organic molecule, the respective molecular geometry is…
Q: 10. Which of the following protons is MOST likely to be abstracted when treated with NaNHz? H₁ a. H4…
A:
Q: Determine the change in thermal energy when 100. g of benzene (C6H6) is cooled from 100.0 °C to 20.0…
A:
Step by step
Solved in 3 steps
- UEid- base tit ration the Consentrat ion of ammonia Solution excess HCL was titrated ith o.07om Na, cO3 Solutian. The volume of Na, Coz Solution reguired was 15.50 ml using the following eguations: 2HCLem> + Na, COgcaps CO2 Cays + HzO1) t NaCL Calculate the concentration (molarity and ppm) of ammonia in the Original Solution.(MM of NHzis 17.031.9/4) 10.0 was by of o.10OMI HCE to ThenFormulate a hypothesis regarding the solubility of aspirin at different pH.The experimentA) Three teaspoons of water (approx. 15 ml) were added to one tablet said to contain 300 mg of aspirin. Fizzingwas observed. Most of the tablet dissolved, but there were some solid particles. By heating the mug in amicrowave for 10 second increments until the water came to the boil (approx. 3x), all of the solid particlesdissolved. The solution was left to cool to room temperature and then placed in a fridge and NOTHINGHAPPENED. Try this yourself if you can spare two aspirin tablets, your results might look different.• Questions to ask:1. What might the fizzing bubbles be?2. Can you give a chemical explanation?3. Can you write a chemical reaction equation with aspirin reacting with something to give a gas and aspirinin another form?4. What might be the formulation (what the manufacturer mixes with aspirin in making the tablet) “trick”for aspirin to improve solubility?5. How does this compare with…3. Complete neutralization of 10 ml of phosphoric acid solution by NaOH 0.I N in the presence of phenol phthalein until the appearance of purple color (pH, = 9) 11 ml. of NaOH is consumed. (a) What is the concentration of phosphoric acid? (b) Calculate the indicator error. pk2.1 pK. - 7.2 pK - 124
- A 10.00cm3 portion of the 100.00cm3 HCl solut was taken from the volumetric flask and was titrated with KOH (aq). It was neeutralized by 24.35cm3 of potassium hydroxide od concentration 0.0500moldm-3. Calculate the concentrat of the original concentrated hydrochloric acid in moldm-3.I would like to prepare standards by conducting a serial dilution of 2mg/ml BSA down to 0.0625mg/ml BSA. How many standard solutions will I have? What are the concentrations of these standard solutions?A 50.00 (±0.03) mL portion of an HCl solution required 29.71(±0.03) mL of 0.01963(±0.0030) M Ba(OH)2 to reach an end point with bromocresol green indicator. The molar concentration of the HCl is calculated using the equation below (attached image): a.) Calculate the uncertainty of the result (absolute error). M=0.02333(±?????) M b.) Calculate the coefficient of variation for the result. CV= (Sy/y) x 100%
- What molar ratio of base/salt is required to prepare an ammoniaammonium chloride buffer solution having a pH of 11.0? The Kbvalue of ammonia ammonia is 1.80 x 10-5 at 250C. Also express theresult in mole percent. The molar ratio of Sodium acetate to acetic acid in a buffer solutionhaving a pH of 5.76 is 10:1. Assuming that the total bufferconcentration is 2.2 x 10 -2 mole /liter, how many grams of sodiumacetate (MW=82g/mole) and how many grams of acetic acid(MW=60g/mole) should be used in preparing a liter of the solution?The value of Ksp for Mg3(AsO4)2 is 2.1 * 10-20. The AsO43- ion is derived from the weak acid H3AsO4 (pKa1 = 2.22; pKa2 = 6.98; pKa3 = 11.50). (a) Calculate the molar solubility of Mg3(AsO4)2 in water.simple steps Find the % of sodium carbonate in a sample if 5.002 g of the sample required 29.10 cm³ of 0.7344 mol dm-³ HCl for complete neutralisation. Make sure to solve the problem using the balanced equation. Solution (a) Determine moles of HC1 (titrant, known) (b) Use a balanced equation relate moles of analyte to moles of titrant (reaction ratio) (c) Determine mass of analyte (determine unknown) and % in sample
- If 1.000 ml. of a solution of KMn04 is equiva- lent to 0.1000 millimole of NaCHO2 (sodium formate) in the fol- lowing titration: 3CHO2- + 2MnO- + H2O -> 3CO2 + 2MnO2 + 5OH-, what is the value of the KMnO4 in terms of grams of CaO in the volumetric method for calcium in which that element is precipitated as CaC2 4 .H2O and the precipitate is filtered, dis- solved in dilute H2S04 , and the oxalate titrated with permanganate?Calculate the percentage CH3COOH in a sample of vinegar from the following data.Sample = 15.00 g, NaOH used = 43.00 ml ; 0.600 N H2SO4 used for back titration =0.250 ml ; 1.00ml NaOH is equivalent to 0.0315 g H2C2O4. 2H2O.0.890 g KIO3 was dissolved to give a 80.00 mL Iodate solution. 35.00 mL aliquot reactedwith the iodide to form triiodide. The liberated triiodide was titrated and consumed 11.65 mL of theS2O32- solution to reach endpoint. Calculate the concentration in molarity of the Na2S2O3solution.