Q: The concentration of V²⁺ in a saturated solution of V₃W₂ is 1.37 x 10⁻² mg/L. What is the Ksp of…
A:
Q: 1. Find the number of millimoles of solute in a. 226 mL of 0.320 M HC104. b. 25.0 L of 8.05 x 10-3 M…
A:
Q: Q4. A 5.00 ml aqueous sample containing hydrogen peroxide was diluted to 25 mL and analyzed by…
A: Permanganate reacts with hydrogen peroxide in acidic medium and reduces to Mn2+ and oxidises…
Q: The concentration of X2− in a saturated solution of A2X3 is 9.62 x 10−11 mg/L. What is the Ksp of…
A: The solubility product constant (Ksp) can be defined as the equilibrium constant for a solid matter…
Q: A titrant solution of KMNO4 was standardized with 0.2g of Na2C2O4 amd consumed 27.75 mL to reach…
A: Given that, a titrant solution of KMnO4 was standardized with 0.2 g of sodium oxalate (Na2C2O4) and…
Q: A 0.1500-M solution Ba(OH)2 was used to titrate a cleaning solution containing acetic acid. A…
A: Answer: Given data: Vsample=50mL VBa(OH)2=43.40mL CBa(OH)2=0.15M
Q: What is the solubility of calcite (CaCO3) in grams per milliliter at a temperature at which its Ksp…
A:
Q: A mixture contains Na2CO3, NaOH and inert matter. A sample weighing 1.500 g requires 28.85 ml of…
A: Introduction: The given sample has a mixture of Na2CO3 and NaOH, here we use two indicators like…
Q: In standardization of HCl sample with 0.1 M Na2CO3 standard solution if we consumed 10 ml .HCl to…
A: Given: The volume of Sodium Carbonate (V1)=10 mL The volume of HCl (V2)=10 mL The molarity of Sodium…
Q: A second reaction mixture was made up in the following way: 10. mL of 3.0M acetone + 10. mL of…
A: The ratio of moles to the volume of solution in liters is known as molarity.
Q: Fluoride treatment causes the OH" in hydroxyapatite (Ca5(PO4)3OH) in tooth enamel to be replaced by…
A: In case of a sparingly soluble salt, solubility product can be calculated using their…
Q: 0,0585g Na2C204 10 ml 'to adjust KMN04 solution prepared as 0,1M distilled water, 2 M H2SO4 was…
A: Solution- A titration is a technique that uses a known concentration of a solution to calculate the…
Q: A solution contains NaHCO3, Na2CO3, and NaOH, either alone or in permissible combination. Titration…
A:
Q: 4/A of ammo- is to receive 36 person nium chloride per kilogram of body weight. If the person weighs…
A:
Q: | NaOH IN 25x10³ Q3: In a carbonate mixture containing HCO, CO², and NaOH, either alone or…
A:
Q: 5. A 300.0 mg sample containing Na,CO3, NaHCO3 and NaOH and inert material either alone or in some…
A: Introduction : It is given that sample which containing Na2CO3 , NaHCO3 and NaOH and are some inert…
Q: 17. Acetylsalicylic acid commonly known as Aspirin (C9H804) is used to treat fever, inflammation,…
A: The reaction for synthesis of aspirin from salicylic acid and acetic anhydride is given as:
Q: A 0.850 g sample of wheat flour was subjected to a Kjeldahl analysis. The ammonia formed after…
A:
Q: A 0.5027 g of KHP (KC8H5O4; MW = 204.22 g/mol) required 11.90 mL of NaOH titrant to reach the…
A: Mass of KHP = 0.5027 g Molar mass of KHP (KC8H5O4 ) = 204.22 g/mol. Volume of NaOH = 11.90 ml…
Q: A 0.2182g sample of NaCl was assayed by the Volhard Method using 50mL of 0.0985N AgNO3 and 11.75mL…
A: Given the mass of impure NaCl sample = 0.2182 g In Volhard's Method for the determination of…
Q: ANALYSIS OF VINEGAR A 25.00 mL vinegar sample was diluted to 250-mL using a volumetric flask. A…
A: Dilution Formula :- When a solution of molarity M1 and volume V1 is diluted by adding water to a…
Q: In the preparation of the standard curve for protein analysis, 50 mn BSA (bovine serum albumin)…
A:
Q: A 1.067g sample of magnesium oxide of 84.736% were treated with 50mL of 1.017 N Sulfuric Acid, and a…
A: Given: mass of MgO = 1.067 g Volume of H2SO4 = 50 mL Normality of H2SO4 = 1.017 N Volume of NaOH =…
Q: A 20-tablet sample of soluble saccharin was treated with 20.00 mL of 0.08181 N AgNO3. After removal…
A:
Q: Calculate the equivalence factor (F) of the KF reagent if a 180 mg sample of sodium tartrate…
A: Mass/weight = 180 mg Volume = 15 ml Equivalence factor (F) = ?
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: -2 What is the mdaritg of la30 XlO of Oxalic acid (HacaDy 2Hg0) in 250 mL öf Solution 7 प्च तऽ छ
A: Given: Mass of oxalic acid (H2C2O4.2H2O) = 6.30×10-2 g. Volume of solution = 250 mL Molar mass of…
Q: A 10.00mL sample of alcoholic ethyl acetate was diluted to 100.00 mL. 20.00 mL was aliquoted and…
A: Given that : Volume of ethyl acetate = 10.00 mL It was diluted to 100.00 mL. Volume of KOH = 40.00…
Q: The concentration of V²⁺ in a saturated solution of V₃W₂ is 1.18 x 10⁻7 mg/L. What is the Ksp of…
A: The given salt is V3W2. Write the expression of dissociation of salt.
Q: If 50.0 mL of Thiosulfate solution are required to titrate the I2 liberated from an excess of KI by…
A: Given: Volume of S2O32- solution = 50.0 mL. Mass of KIO3 reacted = 0.300 g.
Q: A sodium hydroxide (NaOH) solution was standardized with KHP primary standard. The concentration was…
A: A neutralization reaction is one where an acid reacts with a base to form salt and water. The…
Q: A 50.0 mL solution of Ca(OH)₂ with an unknown concentration was titrated with 0.340 M HNO₃. To reach…
A: Given data, Volume of Ca(OH)2 solution = 50.0 mL Molarity of HNO3 = 0.340 M Volume of HNO3 at…
Q: I'm trying to find the wt% of an unknown sample of KHP. I titrated a 1.4024 g of the unknown KHP…
A: The balanced reaction of KHP vs NaOH is: KHP+NaOH→NaKP+H2O Calculation of no. of mol of NaOH:…
Q: If 35.0 mL of a 0.0800 M HNO3, 25.0 mL of a 0.0500 M KSCN, and 55.0 mL of a 0.0500 M Fe(NO 3)3 are…
A: Molarity is given by the number of moles per litre of the solution.
Q: A 2.345 g sample of an oat cereal is determined by a Kjeldahl analysis. The sample is digested with…
A: Solutions- Given-2.345 g of sample of oat cereal.
Q: the molar concentration of the acetic acid solution?
A:
Q: (a) 43.5 mL of 0.175 N Hg(NO3)2 (b) 10 mL of 0.03 N KI if the reaction product is Agl (c) 5 litres…
A:
Q: What is the component concentration ratio, [Pr⁻]/[HPr], of abuffer that has a pH of 5.44 (Kₐ of HPr…
A: The Henderson Hasselbalch equation is given by, pH =pKa + log[A-][HA] where pKa is the negative…
Q: 7. Sodium nitrite was assayed by residual titration with 0.1N potassium permanganate and 0.1 N…
A: The solution is given below -
Q: A mixture contains Na2CO3, NaOH and inert matter. A sample weighing 1.500 g requires 28.85 ml of…
A: Reaction of NaOH with HCl NaOH + HCl -----> NaCl + H2O End point will be achieved using…
Q: Describe the preparation of the following solutions: a. 3.50 L of 0.500 M KSCN from the solid…
A:
Q: For PbCl2, Ksp = 1.7 × 10−5 . What will occur if 250 mL of 0.12 M Pb(NO3)2 is mixed with 250 mL of…
A: Solubility product constant Ksp is an equilibrium constant that is defined as the product of the…
Q: What is the percentage purity of acetic acid if 2.6 grams required 32.5 ml of 0.994 N NaOH solution…
A: Acetic acid is monobasic acid and NaOH is monoacidic base. Hence for both of them normality =…
Q: A mass of TAG (2.151 g) was weighed out accurately. It was then subject to reflux with 100.0 mL of…
A: Saponification value :- The milligram of KOH required to neutralize fatty acid resulting (formed)…
Q: A solution contains KHCO3, K2CO3 and KOH either alone or in permissible combination. A 50.0 mL…
A: As KHCO3 , KOH, K2CO3 all are base and when these are treated by HCL.
Q: 3.) Express in ppt.ppm, and ppb fra fion the conce n of 250 g salt solution with 0.0045 9 salt…
A: Given, Mass of salt dissolved = 0.0045 g Mass of salt solution = 250 g Required,…
Q: When adding 25 ml of a pulverizer containing a solution of M (NaOH 0.2) to a beaker containing 50 ml…
A: The acidic function is measure of the acidity of the solution and the most commonly used acidity…
Q: Titration of a 0.492-g KH₂PO4 used 25.6 mL of 0.112M NaOH. What is the percent purity of KH₂PO4? MW…
A: The number of moles of a substance is determined as the mass of the substance upon its molar mass.…
Q: What is the molar solubility of PbCl2 in a solution of 0.23 M CaCl2? Ksp = 1.6 ✕ 10-5 for PbCl2.
A: 1. Solubility product constant Ksp is an equilibrium constant that is defined as the product of the…
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
- Nick and Kel reacted 2.80g of NiCl2 x 6H20 with 7.00 ml of 4.00 M C2H8N2. They recovered 2.40g of product, [Ni(C2H8N2)3] Cl2. At the end, the filtrate was a dark blue solution. The litmus test on the filtrate solution left the red litmus paper unchanged in color. - NiCl2 x 6H2O + 3C2H8N2 yields [Ni(C2H8N2)3] Cl2(s) + 6H20 - Molor mass of NiCl2 x 6H20 is 237.69 g/mol - Molarity of C2H8N2 is 4.00 M - Molor mass of product,[Ni(C2H8N2)3] Cl2(s) is 309.90 g/mol based on the experiment described, what are answers for the question below the actual or experimenting yield is ________ the theoretical yeild is _____Nick and Kel reacted 2.80g of NiCl2 x 6H20 with 7.00 ml of 4.00 M C2H8N2. They recovered 2.40g of product, [Ni(C2H8N2)3] Cl2. At the end, the filtrate was a dark blue solution. The litmus test on the filtrate solution left the red litmus paper unchanged in color. - NiCl2 x 6H2O + 3C2H8N2 yields [Ni(C2H8N2)3] Cl2(s) + 6H20 - Molor mass of NiCl2 x 6H20 is 237.69 g/mol - Molarity of C2H8N2 is 4.00 M - Molor mass of product,[Ni(C2H8N2)3] Cl2(s) is 309.90 g/mol based on the experiment described, what are answers for the question below the actual or experimenting yield is __2.40g______ the theoretical yeild is __2.89g___ (can someone show me how to caluculate to get this answer?)Yttrium (III) carbonate (MM = 357.84 g/mol) has a Ksp of 1.0 x10-31. If 15.5 g Y2(CO3)3 is stirred into 2.16 L H2O, how many micrograms of yttrium (III) carbonate will dissolve?Report your answer to the nearest whole number.
- A ferrous sulfate (BP) [FeSO4151.9g/mol] sample was analysed by titration using ammonium cerium (IV) nitrate (NH4)2Ce(NO3)6. The result shown 0.4980g of this sample used 25.50 ml 0.110M ammonium cerium (IV) nitrate. The BP specifies that ferrous sulfate material should contain not less than 86.0% and not more than 90.0% of FeSO4 Does the sample comply with the British Pharmacopoeia specification? A. The sample contains 85.6% ferrous sulfate thus does not comply with the British Pharmacopoeia specification B. The sample contains 85.6% ferrous sulfate thus complies with the British Pharmacopoeia specification C. The sample contains 86.0% ferrous sulfate thus complies with the British Pharmacopoeia specification D. The sample contains 89.0% ferrous sulfate thus complies with the British Pharmacopoeia specification E. The sample contains116.9% ferrous sulfate thus does not comply with the British Pharmacopoeia specification How do you work this out ? Time remaining: 00 :09 :31 Chemistry DETERMINATION OF BIOLOGICAL OXYGEN DEMAND USING THE MODIFIED WINKLER METHOD GUIDE QUESTIONS: 1. What are the pertinent chemical equations in the standardization of sodium thiosulfate solution? 2. Explain the reason for the addition of H2SO4 and excess KI. 3. What is the effect of adding the acid before KI? 4. Present the pertinent chemical equations involved in the analysis. 5. Explain the stepwise production of titratable 12 from dissolved Oz in the sample. 6. Explain why the reagents are added in the specific sequence described in the experiment. 7. Explain the would-be effects (if any) of the following considerations: a. Water sample was made to stand overnight before analysis b. MnSO4 was added and the solution was made to stand overnight before the analysis 8. What are the possible sources of errors and their effect on the calculated parameters?A group of wealthy chemistry 1A students had a little too much disposableincome and decided to create the most expensive they could think of. Using various spectroscopictechniques the salt was determined to be rhodium (III) Bromide (RhBr3). When this salt was shaken withpure water at 25°C, the solubility was found to be 0.026 mg/mL. Calculate the Ksp of RhBr3
- Calculate the mass in grams of Al (FM = 26.98) present in an unknown sample if 35.79 mL of 0.8765 M EDTA was required to reach the Calmagite endpoint. Group of answer choices 0.6607 g 0.8464 g 1.163 g 1.102 gA 100 ml bottle of metronidazole 100 mg/ml suspension is available in your pharmacy. Calculate the volume of this suspension needed to be diluted with cherry syrup to prepare 60 ml of a 4% metronidazole suspension. 1 ml of a 1:1000 epinephrine injection was mixed with 20 ml of 1% lidocaine injection. Calculate the new ratio strength of epinephrine in the admixture. (IGNORE ANY VOLUME CHANGES AFTER ADMIXTURE) Instead of preparing 4 grams of tetracaine hydrochloride 4% gel an 8% gel was compounded by mistake. How many grams of the 8% gel and gel base must be mixed to get 4 grams of a 4% gel? How many milliliters of 70% ethanol and 20% ethanol must be mixed to prepare 500 ml of 30% ethanol? A diphenhydramine elixir contains 12.5 mg drug in one teaspoon. The volume of oral vehicle that is to be added to 100 ml of this elixir to reduce its strength by one half its original strength is; 6. 90 capsules of Liothyronine (T3) 15 micrograms are to be prepared. The formula calls for a 1:10000…The Ksp of Al(OH)3 (MM: 78) is 1.90 xx 10^(-33). a) What is the solubility of Al(OH)3 in g/L?
- In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3. Ksp= 1.57x10^-9 How many millimoles of Ba(NO3)2 are needed to completely react with NaIO3? 500 mmol 250 mmol 25 mmol 12.5 mmol What is the concentration of the excess reagent? 0.1125 M 0.3219 M 0.1195 M 0.2375 M What is the molar solubility of Ba(IO3)2 in this solution? 04x10^-5 M 07x10^-5 M 15x10^-5 M 30x10^-5 MGiven the borax reaction: Na22B44O5(OH)4 × 8H2O(s) <=> 2Na+(aq) + B4O5(OH)42-(aq) + 8H2O(l) What would be the Ksp of borax at 40°C if the solubility of borax is 0.8 mol L-1 at that temperature?1. Suppose that the formation of mullite from a mixture of alumina and silica powders is a diffusion-controlled process. How would you prove it? If the activation energy is 50 kcal/mole and the reaction proceeds to 10% of completion at 1400°C in 1 hour, how far will it go in 1 hr at 1500°C? and in 4 hr at 1500°C? Answer: 0.15, 0.284.