Q: 10. The color change of a chemical indicator requires an over titration of 0.03 mL. Calculate the…
A: Given, The error in measurement = 0.03 mL The experimental values are 50.00 mL, 10.0 mL, 25.0 mL,…
Q: pka=pH halfway to the equivalence point. what is the equivalence point volume? it says to do so by…
A: Introduction: Titration is the process to find concentration of unknown solution using known…
Q: The accepted value of K is 1.2 x 10 -12 for AgCro, Calculate the percentage error if your…
A: Accepted value of Ksp = 1.2 × 10-12 Experimental value of Ksp = 1.4 × 10-10 We need to find…
Q: Volume of N2OH pH added (ml) 1.00 1.22 1.48 1.85 2.18 2.89 3. 20 3.50 3.90 10 20 30 35 39 39.50…
A: The question is based on the concept of titrations. we are writing a strong acid with a strong base.…
Q: Calculate titre of potassium dichromate, in case when 500 ml of the solution contains 1,2230 g of…
A:
Q: a) Compare between equivalence point and endpoint. Distinguish which point comes first.
A:
Q: An analysis of city drinking water for total hardness was done by two students in the laboratory and…
A: Given, two sets of data. Mean can be calculated as: x = mAX xA+nBX xBmA+nB x = mean of two sets mA =…
Q: Mixing 150.0 mL of 1.50 M Ba(NO3)2 (aq) with 250.0 ml of 5x10-2M Na2SO4 at 25°C. The Ksp of barium…
A: The solubility of barium and sulfate ions in the aqueous solution is considered to be s. It can be…
Q: Calculate the standard deviation for the molarity of ascorbic acid in the vitamin C supplement…
A: Formula for calculating the standard deviation: SD=∑(Average value-Value)2N
Q: the equivalence point?
A:
Q: 2.1 Preparing primary standard potassium acid phthalate (KHP) solution for standardizing the 0.1 M…
A: KHP and NaOH react with each other in a stoichiometric ratio of 1:1.
Q: Iculate the solubility of Mg(OH)2 in 0.10 M NaOH. Calculate the solubility in ams/liter. 1gl0H)2.10M…
A: Given : Concentration of NaOH = 0.10M
Q: Given the following data and the λmax determined in the previous questions, determine: 1) the molar…
A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…
Q: Students measured the concentration of HCl in a solution by titrating with different indicators to…
A: 95 % confidence interval for a population mean can be represented as 1. Bromothymol blue, the…
Q: D) Mixing 5 mL of 1 M HNO3 with 10 mL of 1 M NaHCO3
A: Given buffer solution is acidic buffer. And acidic buffer solution is solution of weak acid and its…
Q: pre-equivalence end stage equivalence post-equivalence
A: Titrant is the substance which is added in analyte to major the pH . If we add more titrant. Then…
Q: Distinguish the terms end point and equivalence point.
A: Equivalence point comes before the end point. At equivalence point, the number of moles of titrant…
Q: A lab wishes to analyze apple juice. They would like each milliliter of titrant equal to 0.1% of…
A: The titrant=0.1% Volume =10ml Equivalent weight of malic acid is 67 Normality =?
Q: Two trials made in the determination of the Molarity of NaOH solution gave the following results.…
A: 1. Molarity It is defined as no. of moles of solute present in 1 liter of solution. Molarity = No…
Q: pka=pH halfway to the equivalence point. what is the equivalence point volume? it says to do so by…
A: A titration curve represents pH of the solution with volume of base added.
Q: which of the following is secondary standard ? A) hydrochloric acid B) sodium oxalate , C)…
A: Given compounds, A) hydrochloric acid B) sodium oxalate C) potassium hydrogen phthalate D) sodium…
Q: Standard solution used in nonaqueous alkalimetry: a. hydrogen bromide b. sodium hydroxide c.…
A:
Q: What is the difference between the equivalence point and the end
A: Titration reactions also involve color change. These reactions involve end point and equivalence…
Q: 1. Bromothymol blue indicator is color yellow in an acid solution and ______ in a basic solution. A.…
A: ✓As we know bromthymol blue is a weak acid. It can be in acid or base form, depending on the pH of…
Q: What is difference between end and equivalence point?
A: Endpoint and Equivalence point are terms used in the volumetric analysis to indicate different…
Q: Following titration analysis, a sample of a fruit juice was found to contain 8.9 mg cm-3 ascorbic…
A: Given data: Amount of ascorbic acid in the sample = 8.9 mg/cm3 Molecular weight of ascorbic acid =…
Q: Based on the following molarities obtained,1.00 x10^-1 , 1.04 x10^-1 and 1.0 2x10^-1. fine the…
A: First the average molarity from given 3 values is calculated by adding those values and dividing it…
Q: calculate the neutralization equivalent for malonic acid and maleic acid
A: For an acid, neutralization equivalent is determined as- Neutralization Equivalent = Molecular…
Q: 6 I- + BrO3- + 6 H+ ----- 3 I2 + Br- + 3 H2O Rate= k[I-]m[BrO3-]n[H+]p rate=…
A: #Q.1: In order to begin the reaction, we have to mix all the volumes. Hence total volume of the…
Q: Suppose that you started with 5 ml of 200 mg/L Cu2+ solution and added it to 1.0g of soil. After…
A: (1) Here we are provided with 5 mL of 200 mg/L of Cu2+ solution which is added to 1.0 g of soil.…
Q: -Volume of unknown acid___ -Average molarity of NaOH from above__ -mL of NaOH at equivalence point__…
A: Solutions- Given data- Sheet of pH readings, Molarity of NaOH etc.
Q: Data Table1: Height (mL) for Stock Sugar Solutions XX Sugar Solution Concentration 0.0% Solution…
A: In the Sugar Solution Concentration Vs. Bulb Height Volume plot, we take Sugar Solution…
Q: Why is it necessary to have different methods for appl
A:
Q: d) 10.0 mL past the equivalence point
A:
Q: pka=pH halfway to the equivalence point. what is the equivalence point volume? it says to do so by…
A: The Inflection point of a titration curve is defined as the point where the curve is changing from…
Q: 10. Which refers to the difference between the end point and the equivalence point? A. indicator…
A: We need to understand the meaning of Indicator error End point error Titration error Personal…
Q: pH Solution is <7 (c) (select) |1.0 x 10-7 м (е) (select) (a) (select) <1.0 x 10-7 M (0 (select) (b)…
A:
Q: Difference between gravimetry and volumetric methods
A: Introduction : Titration is a process in which chemical analysis of the quantity of some consistent…
Q: Given the following data and the Amax determined in the previous questions, determine: 1) the molar…
A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…
Q: 15 10 10 12 16 18 20 22 24 Volume of NaOH Added (mL) Where is the equivalence point?
A: Equivalence point: The point at which the moles of acid added equals the moles of base that you…
Q: The solubility product of Zn(OH)2 at 25oC is 3.0 x 10-6 M3. Calculate the solubility of Zn(OH)2 in…
A: Welcome to bartleby ! We have to calculate Solubility in g/l
Q: 30mL 0.9% v/v green food coloring. Transfer 2mL of of food coloring to flask, QS the flask to 100mL…
A: v/v % = volume of solute/volume of solution × 100 given = 0.9% = 0.9mL of solute…
Q: The end point and the equivalence point are always equal. O True O False
A: End Point = End point in a reaction is where the one of the reacting species is slightly in excess,…
Q: Does it possible to use gravimetric analysis to quantiify certain parameters as indicators of…
A:
Q: 150.0 mL of 0.27 M HF with 230.0 mL of 0.30 M NaF The Ka of hydrofluoric acid is 6.8 x 10-4. Express…
A: A particular solution holding the capacity to resist its pH alteration even on the addition of…
Q: Table 1. Titration data Trial 1 Trial 2 Trial 3 Initial burette reading (mL) 1.43 2.50 1.33 Molarity…
A: Given: Trial-1 Trial-2 Trial-3 Initial burette reading 1.43 2.50 1.33 Molarity of NaOH…
Q: What is the equivalence point?
A: Titration is one of the most common method of qualitative analysis of substances given. It is done…
Step by step
Solved in 2 steps
- Define the term Equivalence point?30 20 10 From the procedure 2. Assemble the simple distillation apparatus as generally shown in Figure SD.1 in the lab manual, ensuring that the thermometer bulb is aligned at, or slightly below, the Y in the distillation head. Each ground joint is greased by putting three or four stripes of grease lengthwise around the male joint and pressing the joint firmly into the other without twisting. 3. Attach a water condenser to the distillation head. 4. Remember, water goes in the bottom and out the top. Attach a clamp holder to the end of the drain tube to keep it weighted in the drain. Turn water to a trickle. If it is slowly draining, it is high enough. Begin a low flow of water through the condenser. 5. Place the set up on a heating/stir plate. 6. Turn on the hot plate to start heating the solution. Monitor the temperature and the boiling of the solution throughout the distillation process. 7. Record the temperature of the distillate when the first drops are recovered. 30.0 8. Adjust…A sample (50 mL) of a bottled water was added to a 100 mL volumetric flask and then diluted to the mark. From this stock solution, 50 mL was taken, added to a 100 mL volumetric flask and diluted to the mark. Final concentration of the serial dilution: 587.7161ppm. 1. what is the concentration in the original bottle (ppm)
- (d) A sample contains a mixture of ammonium carbonate (NH4)2CO3, sodium carbonate Na2CO3, and sodium chloride NaCl. Thermogravimetric analysis indicates that a 0.0965-g portion of this sample loses 0.0574 g over a temperature range of 50-75 oC and then loses another 0.0124 g at 800 oC.(i) What causes the weight loss at 50-75 oC? (ii) What species will remain after being heated to 800 oC? (iii) What is the composition of the original sample? Given: Atomic masses: H = 1.008; C = 12.011; N = 14.007; Na = 22.99; O = 15.999;Cl = 35.45.Materials Needed solid I2 solid CUSO4-5H20 food dye solid (NH4)2SO4 heavy metals waste container halogenated waste container non-halogenated waste container semi-micro test tubes and rack regular test tubes and rack squash pipettes acetone cyclohexane propan-2-ol Method Part A: Solubility of ionic and molecular solids 1. Place a small amount (about the size of 1 grain of rice, see picture) of copper sulfate into each of three DRY semi-micro test tubes. Add 20 drops of water to the first test tube and gently flick the test tube with your finger to ensure mixing. 2. Repeat step 1 using acetone in place of water as the solvent in the second test tube. 3. Repeat step 2 replacing acetone with cyclohexane in the third test tube. Hold the test tubes against a white background to compare the solubility of copper sulfate in the three solvents and record your results. Discard these mixtures into the heavy metals waste container in the fume cupboard. Once these test tubes have been emptied you…4. A fat sample with combination of acids contain standard hydrochloric acid for blank and sample with 8mL and 5mL respectively. The normality of the standard hydrochloric acid is 0.93N and the weight of the sample is 3 grams. Calculate the saponification value.
- w w w w w T Concentration (grams/kg H₂O) 1000 900 800 700 600 500 400 300 200 100 0 0 Solubility Curve for Potassium Dichromate (K₂Cr₂O₂) 10 20 30 40 50 60 70 80 90 100 Temperature (Celsius) Use the solubility curve for questions 22-25. You put 480 g K₂Cr₂O, in 1 kg of water? At which temperature will the 22. solution be saturated? A. 40 °C B. 70 °C C. 1000 °C D. Equal amounts of K₂Cr₂O; will dissolved at all of the listed temperatures. You put 150 g K₂Cr₂O7 in 1 kg of water? At which temperature will the 23. solution be saturated? A. 30 °C B. 50 °C C. 80 °C D. K₂Cr₂O, will dissolved equal fast at all of the listed temperatures.Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample. The stated should be 104.5, how??Oral rehydration salts are stated to contain the following components: Sodium Chloride 3.5g Potassium Chloride 1.5g Sodium Citrate 2.9g Anhydrous Glucose 20.0g 8.342 g of oral rehydration salts are dissolved in 500 ml of water. 5 ml of the solution is diluted to 100 ml and then 5 ml is taken from the diluted sample and is diluted to 100 ml. The sodium content of the sample is then determined by flame photometry. The sodium salts used to prepare the mixture were: Trisodium citrate hydrate (C6H5Na3O7, 2H2O) MW 294.1 and sodium chloride (NaCl) NW 58.5. Atomic weight of Na = 23. The content of Na in the diluted sample was determined to be 0.3210 mg/100 ml. Determine the % of stated content of Na in the sample.