If the titer during the standardization procedure of HCI is 32.50 ml by using 0.2115 grams of sodium carbonate as its standard, what is the percent error if the target concentration is 0.1250 N?
Q: Electrochemical cells can be used to measure ionic concentrations. A cell is set up with a pair of…
A:
Q: 4. Predict the effect of adding more H,(g) to a constant-volume equilibrium mixture of N, H, and…
A: Given unbalanced reaction is : N2 (g) + H2 (g) <--------> NH3 (g) Predict the effect of…
Q: Proteins occurring in the b-pleated sheet structure Multiple Choice contain no peptide bonds. are…
A: The correct answer is Option (B) The b-pleated structures are relatively inelastic.
Q: Under acidic conditions (such as in your stomach) benzyl penicillin (BP) breaks down to three…
A:
Q: which is true if a mixture of enantiomer with a specific rotation of +2 if specific rotation of…
A:
Q: 4signals ille PPM OH Он
A:
Q: Br t - DuOK Me DM SO
A: The base will abstract the proton and causes ring opening.
Q: Which of the following isomeric dienes is chiral? Select the correct response.: 2,3-pentadiene…
A: 2,3-pentadiene is chiral. Explanation :- Alkenes with 2 C=C double bonds in a row are called…
Q: Doc Jill wants to determine the Ao of a weak acid she isolated called Xcitingpartic acid (HXp). She…
A: Hii there, As there are multiple sub parts posted. we are answering first-three sub parts . If you…
Q: For a specific reaction, which of the following statements can be made about K, the equilibrium…
A: Given, For a specific reaction, which of the following statements can be made about K, the…
Q: br Me A
A: In the given structure , there are two chiral center present in the given molecule . they give four…
Q: The optically active bromohydrin (1R, 2R)-2- bromocyclohexanol reacts with base to produce…
A: here we are required to predict the stereochemistry of the product formed.
Q: of Submitted the following oxidation-reduction reaction as if it were to occur in a basic solution.…
A: Given reaction is : I- (aq) + ClO- (aq) ---------> I3- (aq) + Cl- (aq) Balance the reaction in…
Q: How many moles of aluminum nitrate are required to prepare 3.00 L of 0.0065 M solution?
A:
Q: There are four hydrogen atomic emission lines in the visible region of the electromagnetic spectrum.…
A:
Q: the follówing alkynes will have a positive reaction with alcoholic AgNO3?
A:
Q: 5. Determining the percent sulfuric acid in an unknown solution. Experimental Procedure and Results:…
A: Given: Mass of empty 50 mL beaker = 52.5 g Mass of beaker + unknown solution = 66.55 g Drops of NaOH…
Q: 3) H2SO4, A 2) H20 OH
A:
Q: 2) Consider the coordination compound [Pt(NH3)4(OH)2]SO4. the problem-solving process steps: a)…
A: Coordination compounds are those in which the metal ion is coordinated to the different neutral or…
Q: ्छुकण्ट नैनंजपर जपपट ज मह पडरव्ंट ककर कीववे ड oocंबटd कटक खकं नी कhर कीठिमेकम तनतरिण्पकव रठ…
A: Sodium ethoxide is base and it will abstract acidic proton from active methylene group which…
Q: Consider the reaction: NO(9) _H2(g) → N2(g) +. H2O) for which AS'= -551.7 J/K at 25°C. Using the…
A:
Q: Which one of the following statements is correct? * O Kc does not depend on temperature. O When Kc…
A:
Q: Which of the properties below apply to the following polymer? (CH (CH) Choose all that apply. a…
A: Given polymer structure is :
Q: View Policies Current Attempt in Progress A bubble of air escaping from a diver's mask rises from a…
A: Given the depth of water from the surface, h = 197 ft x (30.48 cm / 1 ft) x (1 m / 100 cm) = 60.046…
Q: What is E° for the cell Mn | Mn²*(aq) || Ag*(aq) | Ag? Standard Reduction E° (V) Potentials Ag+(aq)…
A:
Q: Analyze the spectrum and include identification of the different fragments available based on peaks…
A: The IR of compounds only tells us about the key functional group present in the compound and not…
Q: a. 1) H2SO4, A 2) O3 3) (CH3)2S OH b. 1) MCPBA 2) LIAID, 3) Но HO с. CN OH d.
A: This question have multiple subparts so I will solved first three subparts for you in details.
Q: Complete the following nuclear equation and identify X. Potassium-40 ----> Beta + X
A: In this question we have to identify the X in the nuclear equation by balancing the nuclear…
Q: QUESTION 20 Balance the following electrochemical reaction in acıd: MnO 4 (aq) + Zr( s) → Mn 2*( aq)…
A: Detail solution is given below
Q: write a balanced chemical equation to obtain the product shown (aldol condensation) Hint: 2A + B…
A: This is double aldol condensation reaction between two moles of aldehyde compound which give…
Q: A. Calculate the molality, freezing point, and boiling point for each of the following water…
A:
Q: The mass of magnesium hydroxide that is dissolved in 250 mL of a saturated solution is grams.
A:
Q: Why is aluminum foil punctured in an experiment to determine the partial weight of volatile liquids?
A: In Dumas method for the determination of the molecular weight of a volatile liquid, the Erlenmeyer…
Q: 4) During a titration, 0.927 L of şulfuric acid, H2SO4, is used to neutralize 335.0 mL of 0.648 M…
A:
Q: 2. Consider the following equilibria: 2S0;(g) = 2S02(g) + O2(g) K.= 2.3 x 10-7 2NO;(g) = 2NO2(g) +…
A: Characteristics of equilibrium constant: If reaction is reversed equilibrium constant is…
Q: Translate into condensed structural formula
A:
Q: Chemistry Explain why a percent yield by H NMR may be lower than a percent yield by mass.
A: The percent yield is calculated using the formula below: Percent Yield = Actual YieldTheoretical…
Q: Which of the following represents (E)-3,6-dichloro- 6-methyl-3-heptene? A B C D Select the correct…
A: In this question we have to tell the structure of the given compound.
Q: е. OCH3 1) PBR3 Ho 2) КОС(СНз)з 3) mСРВА f.
A:
Q: A sample containing only NaCl and KCI was treated with AgNO,.. The sample weighed 0.5325 grams.…
A:
Q: Guide Questions: 1. When balancing redox reaction in a basic solution, how many OH- should be added…
A: Given, 1. When balancing redox reaction in a basic solution, how many OH- should be added toeach…
Q: Draw a phase diagram for water. Label the axes, the states of matter, the triple point and the…
A: Phase diagram of water is given by,
Q: write half equations for the following conversions and state whether the conversion is an oxidation…
A: Given, a) H2O2 to O2 b)H2O2 to H2O The half reactions is:
Q: The optically active bromohydrin (1R, 2R)-2-bromocyclohexanol reacts with base to produce…
A: Product is not a Racemic product because the starting material is optically pure ( just taking one…
Q: Which of the following structures is the cis configuration of 1,3-dimethylcyclohexane with both…
A: Cyclohexene exist in two confirmation: chair and boat confirmation. Chair confirmation is more…
Q: Consider an ideal diatomic gas in a piston, at T = 22.7°C and atmospheric pressure (1.01 x 105 Pa)…
A:
Q: 2 Propose a mechanism to account for the formation of this product. он H2SO4,Heat
A:
Q: We first set the spectrometer to an appropriate wavelength before we use it to measure intensity of…
A: To explain why it is necessary to set the spectrometer to an appropriate wavelength before measuring…
Q: You perform a thin-layer chromatography test on pigments extracted from a purple flower. There are…
A: Thin-layer chromatography, most commonly known as TLC, is one of the most important separation…
Q: Give a clear handwritten answer with explanation ..
A: The proton will attach to that side of alkene which form more stable carbocation.
If the titer during the standardization procedure of HCI is 32.50 ml by using 0.2115 grams of sodium carbonate as its standard, what is the percent error if the target concentration is 0.1250 N?
Step by step
Solved in 2 steps
- It is a solution of unknown concentration in which a solution of accurately known concentration is gradually added until the reaction is complete. Analyte Endpoint Indicator TitrantA student performed an acid-base titration in the lab and recorded the results as shown below. Look very carefully at the results and answer the questions which follow. 7. 演定結果 21 3. 346 27.40 00 36 終結摘定管讀數(cm) 開始定管數(Cm 所需演定州的積(cm) 44 標 (a) Why do we perform acid-base titrations in our labs? (b) In the titration performed by the student, what was the net ionic equation for the chemical reaction occurring?A student prepares a weak acid solution by dissolving 0.2400 g HZ to give 100. mL solution. The titration requires 30.0 mL of 0.1025 M NaOH. Calculate the molar mass of the acid. (a) Would the molar mass be too high, too low, or unaffected if the student accidentally used 0.1400 g in the calculation? Explain. ex. too high/too low/unaffected and directly proportional/inversely proportional/ unrelated (b) Would the molar mass be too high, too low, or unaffected if the student accidentally used 20.0 mL instead of 30.0 mL? Explain. ex. too high/too low/unaffected and directly proportional/inversely proportional/ unrelated
- Q2) a) Explain the titration curve (variation of pH with respect to addition of titrant) with suitable diagram and reactions involved when a strong base is added as titrant to a weak acid as analyte. (b) The saline water discharged from a thermal desalination plant was analyzed and it has following composition.(i) If the discharged water sample contains 4.2 g of potassiumchloride (KCl) per 500 mL of solution, determine its molarity.(ii) The sample contains CaCl2 and its concentration was found to be 0.04M. Calculate grams of CaCl2 present in 100 mL of the sample. (c) In complexometric titration, explain why a constant pH need to be maintained during estimation of metal ions using EDTA.You want to determine the concentration of NaCl in a water. In preliminary analysis, it appears to be saline water with a NaCl content of approximately 4%. Should you dilute the sample if your titrant has a concentration of 0.1 M and you want to spend 25 mL of sample?3) 2.413 g sample contains Na CO̟, NaHCO and inert material. This sample was solved in water and diluted to 250.0 ml. 80 ml solution was taken and titrated with 0.09644 N HCl with the indicator of phenolftalein. 6.13 ml HCl was consumed. From a second solution, again 80 ml was taken and titrated with the same HCl solution with the indicator of methylorange. 15.4 ml HCl was consumed. Calculate the percentage of NaHCO¸ and 3 Na CO in sample (Na CO_=106.0 g/mol, NaHCO_=84.02 g/mol). 3
- A stock standard concentration of 101.25ppm was prepared of Cu. What are the actual concentrations of the working standards prepared in 100mL volumetric flasks, using 1mL, 5mL, 8mL, and 10mL volumes of the stock standard?1. A sample of pure sodium oxalate, Na2C2O4 , weighing 0.2856 g is dissolved in water, sulfuric acid is added, and the solution titrated at 70°C , requiring 45.12 mL of a KMNO4 solution. The end point is overrun and back-titration is carried out with 1.74 mL of a 0.1032 N solution of oxalic acid. Calculate the normality of the KMNO4 solution. Hint: A redox reaction is involed between oxalate and permanganate. Look at the changes in oxidation state by determining the balanced redox reaction: 5C20,2 + + 2MN2+ 2 Mn04 + 10H* → 10CO2 + 8H20In the titration calculation, moles of KOH were calculated from the known molarity and measured volume. Reaction stoichiometry was then used to convert that to moles of succinic acid. At this point, how could the moles of succinic acid be converted to a mass of succinic acid rather than a concentration?
- (1) Careless Carlie weighed her KHP sample, but forgot to bring her report sheet along, so she recorded the mass of KHP on a paper towel. During her titration, which required 18.46 mL of base, she spilled some base on her hands. She remembered to wash her hands, but forgot about the data on the towel, and used it to dry her hands. When she went to calculate the molarity of the base, Carlie discovered that she didn’t have the mass of her KHP. Her kindhearted instructor told Carlie that her base was 0.2987 M. Calculate the mass of Carlie’s KHP sample. Show calculations (2) What mass of solid NaOH would be needed to make 645 mL of Carlie’s NaOH solution? Show calculations.A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer were sodium monohydrogen phosphate and sodium dihydrogen phosphate. The first endpoint occurred at a volume of 10.32 mL, and the second occurred after an additional 18.62 mL was added, for a total volume of 28.94 mL. What was the total concentration of phosphate (in any form) in the buffer? **Please be as detailed as possible. The different volumes in this titration are a little difficult to understand** THANK you in advance.When standardizing two liters of a potassium permanganate solution, approximately 0.0100 M, with a primary standard solution of sodium oxalate, it was planned to use between 30.00 and 45.00 ml of the titrated reagent. In which mass range (in grams) the primary standard should be weighed?