Q: 10. Determination of the presence of Aluminum ion in 30.0g of ore sample is: a standardization…
A: A standardization process is that in which the concentration of a substance is determined.…
Q: 5.What
A: 1) Oxidation number of Rb = +1 2) Oxidation number of O = -2 3) Oxidation number of Tc = Findout…
Q: A 0.3311 -g sample of pure iron (55.847 g/mol) wire was dissolved in acid, reduced to the +2 state,…
A: We need to find molar concentration of cerium ion.
Q: A 0.973-g sample of canned tuna was analyzed by the Kjeldahl method. A volume of 21.15 mL of 0.1174…
A: 1. Moles of HCl required to titrate the liberated ammonia =Volume of HCl consumed (in L)×Molar…
Q: Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H20 → Cd(OH)2 + Ni(OH)2…
A:
Q: Calculate the oxidation number of: a. Fe in Fe2O3 b. Cr in CrO4^2- c. Cr in Cr2O7^2-
A: (a) Fe2O3 Oxidation state of oxygen = -2. Three oxygen atoms are there, so = 3 × (-2) = -6…
Q: Calculate the pK for the oxidation of X by Hplus at 25 degrees C. X(s) + 2 Hplus → X2 plus (aq)+…
A: Given reaction: X(s) + 2H+ ----> X2+ (aq) + 22H2 (g) half reaction: X ----> X2+ + 2e- E…
Q: Complete and balance the following oxidation–reduction reaction in basic solution: Cr1OH231s2 +…
A: The given reaction is represented as follows:
Q: What are chelating agents?
A: Chelating agents has to be defined.
Q: What type of reaction is… Zn (s) + Ni(NO3)2 (aq) →
A: Given is, Zn (s) + Ni(NO3)2 (aq) →???
Q: For H2CO3, Kal = 4.3 x 10- and K = 4.8 x 10-11. %3D What is [CO3] closest to in a 0.10 M H,CO3…
A:
Q: 60 Cu. DFe (a, B) Cu. 26
A: The balanced radioactive Chemical equation is as follows.
Q: Calculate the pH of a 0.050 M aqueous solution of CH3CH2COOH, Ka = 1.80 x 10^-5
A: The pH of a solution is determined as the negative logarithm of the concentration of the hydrogen…
Q: When 55.5 g of calcium chloride CaC12 was dissolved in 0.5 L of water, so the concentration of the…
A: Given Mass of CaCl2 = 55.5 gram Volume = 0.5 Liter Molarity = ?
Q: Assign an oxidation state to each atom in each poly atomic ion. a) CrO42- b) Cr2O7 2- c) PO4 3- d)…
A:
Q: In which compound does carbon have an oxidation number of -3? a) CO b) CO2 d) CH. c) CH,
A: Oxidation Number of O = -2 Oxidation number of H = +1
Q: Calculate the pK for the oxidation of X by Hplus at 25 degrees C. X(s) + 1 Hplus → X1 plus (aq)+…
A:
Q: 0.7682 g MgCO3 is dissolved in 1000 mL water, 50 mL of this solution is taken and titrated with…
A: • Since, here is given that MgCO3 is taken as 0.7682 gm and its aqueous solution has been made in…
Q: Cl, + 2NaBr → 2NaCl + Br, a. Oxidizing agent: b. Reducing agent: c. Oxidized: d. Reduced: e.…
A:
Q: Calculate the concentration of Y4-ion in 0.0100 M EDTA solution at pH 6. a4 = 2.2 x 10-5 for PH 6
A:
Q: Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of FeCl3 used in preparation :…
A: The given compound first undergoes dissociation in its aqueous solution as,
Q: What species is the oxidizing agent in the reaction below? CIO + Cro, → CI¯ + CrO, 2- CI CrO, а. с.…
A: Oxidising agent: those species reduces itself and oxidise others are called oxidising agent.
Q: If 23.00 mL of Cu(C2H3O2)2 is required to react with 35.00 mL Na2S solution with a concentration of…
A: Given, volume of Cu(C2H3O2)2 = 23.00 mL Volume of Na2S = 35.00 mL Molarity of Na2S = 0.450 M
Q: rite a balanced equation for the reaction m and zinc metal to yield zinc(I) and chromium(III) in…
A: Balance chemical equation is defined as which has equal number of atoms or ions in both sides…
Q: Write a balanced equation for the reaction between nitrous acid and copper (II) hydroxide. O HNO3 +…
A:
Q: [Ni(en)31(NO3)2 + S20 (ag) Slightly Y () violet ppt. alk. medium
A: The coordination compounds are those in central metal atom is bonded to ligands. The ligands are the…
Q: 5. Briefly discuss the effect of alkalinity on flocculation.
A:
Q: What is the oxidation number for C in MgC2O4 A. -4 B. +2 C. +4 d. +3
A: We have compound MgC2O4, we have to calculate the oxidation state of C in this
Q: The photographs below (a) show what occurs when a solution of iron(III) nitrate istreated with a few…
A:
Q: Calculate the molar concentration of EDTA since 42.35 mL of EDTA is consumed in the titration.…
A: The complex formation reaction between Mg^2+ and EDTA solution is Mg^2+ + EDTA = [Mg-EDTA]^2+ So,…
Q: Calculate the masses of Ni(OH)2 that will dissolve in the following solvents Ksp Ni(OH)2 = 6.0x10-16…
A: Part A Let the solubility of Ni (OH)2 in 250 mL of water be ‘s’ Ksp = [S][2S]2 Ksp = 4S3 6 x 10-16…
Q: What is the net ionic equation for the reaction between aqueous solutions of Cu(C2H3O2)2 and NaOH
A: Balanced chemical equation: Cu(C2H3O2)2 (aq) + 2NaOH (aq) -------> Cu(OH)2 (s) + 2NaC2H3O2 (aq)…
Q: alculate the alkalinity of a lake if you know that the concentration of h2cos is 3000 um, hcos…
A:
Q: A Cu2+ solution is prepared by dissolving a 0.4728 g piece of copper wire in acid. The solution is…
A: Molarity - ratio of number of moles of solute to the volume of solution in litres. Formula is,
Q: oxidation state of Mn and dn configuration in [Mn(acac)3]
A: Given, [Mn(acac)3]
Q: Write the stepwise deprotonation of H2CO3. Calculate the [H3O*],[ HCO3 ], [CO3?],[OH*] and pH of…
A: Answer:- This question is answered by using the simple concept of calculation of concentration of…
Q: Balance the equation below for the reaction under acidic aqueous conditions. Cr20 (aq) (ag) Cr3+…
A:
Q: For the below reaction, calculate the alkalinity produced in mg/L Caco, if the influent methanol…
A: To find out the alkalinity in mg/L CaCO3 given that the influent methanol concentration is 4 mM.
Q: 20. An excess of AgNO3 reacts with 185.5mL of an AlCl3 solution to give 0.325 gof AgCl. What is the…
A: Volume of solution (V) = 185.5 mL Mass of AgCl = 0.325 g
Q: pH calculations Calculate the pH of a 0.050-MAI(NO3)3 Solution. The Ka value for Al(H20)6³+ is 1.0 x…
A:
Q: A solution containing 0.40249 g of CoCl2. xH2O was exhaustively electrolyzed to deposit 0.09937 g of…
A: Given: Mass of CoCl2·xH2O = 0.40249 g. And mass of Co formed = 0.09937 g.
Q: 1. Write and balance chemical reactions that happen when Pt is dissolved using aqua regia forming…
A: The chemical reaction for the formation of H2PtCl6 is given below
Q: Calculate the final molarity of H2O2H2O2 if 5.1 mL5.1 mL of a 3.0% w/w H2O23.0% w/w H2O2 solution,…
A: H203 solution is3.0 5 so 100 g of h202 solution contain 3 g calculate volume of 100 g solution…
Q: Calculate the pH of a 3.5 x 103 M HNO3 solution. Multiple Cholice 2.46 3.46
A: Dissociation of nitric acid in aqueous solution: HNO3(aq) + H2O(l) → H3O+(aq) + NO3-(aq) Given,…
Q: What is the concentration of Co(OH)₂ (aq) in a solution in which the concentrations of Co²+ and OH…
A:
Q: 20- Brown rinc In a salt Experim (a) Nitrates are (b) Fe2* acts as (C) Brown ring (d) NO gas forn a
A: Brown ring test: It is also known as the nitrate test. This test is performed to check out the…
Q: Calculate the concentration of free Zn+2 in 0.08 M ZnY2- solution at pH = 9 . (Kf = 3.2 x 1016 , α4…
A: Based on the number of donating sites, the ligands are named as mono, di, tridentate ligands, and so…
Q: Give the equation for the leaching reaction of (i) Cu° with NaCl/CuCl2 solution (ii) Ag° with KCN…
A: Given information:
Q: 1. Cu(s) | Cu2+ (0.05 M) || Cu2+ (1 M) | Cu(s) 0.039 v Calculation for E (cal.) (eq. 11): EO-0.0592…
A: a) The Ecell is to be calculated. b) The situation of the concentration of 0.05 M solution has to be…
what is the pH of bleach with [H3O+]=4.2*10-12 M
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Calculate the concentration of the carbonate and bicarbonate ion in one sample. (Ka2 H2CO3 is 4.7 x 10-11) using the equation [alkalinity] = 2[CO3 2- ] + [HCO3 - ] + [OH- ] – [H30 + ] pH = 8.10 alkalinity = 135.8mg/LThe concentration of yeast RNA in an aqueous solution is 12.0 mg/L. The absorbance is found to be 0.208 when this solution is placed in a 1.00 cm cell at 265 nm. Its molecular weight is 5.7 x 103 g/mol. a) Calculate the molar absorptivity of the yeast RNA. b) What will be the absorbance if the solution is 6.0 mg/L and the path length is 1.00 cm? c) What will be the absorbance if the solution is 12 mg/L and the path length is 2.00 cm? (Show your work)What is the pH of bleach with hydronium ion concentration of 0.0879 M?
- What kind of reaction is 2NaOH + H2SO4 -----> Na2SO4 + 2H2OAuzure II is a dye with a molar absorptivity (ε657) of 8.13×104 L/mol·cm when measured at 657 nm. Calculate the expected absorbance of a 4.50×10–6 M solution of Azure II, when measured in a 2.00 cm spectroscopic cell at 657 nm. Answer: Expected Absorbance =The concentration of glucose in an aqueous solution can be determined by oxidation with ferricyanide ion, Fe(CN)63–. The absorbance of the ferricyanide ion measured at 420 nm increases as the concentration of glucose increases. [Glucose], mg / mL Absorbance 0.005 0.132 0.010 0.290 0.020 0.498 0.030 0.642 0.040 0.750 Using the method of least-squares, give the equation of the best straight line through the points. Make sure that m=slope has 3 decimal places (XX.XXX) and y-intercept (b) has 2 significant figures (0.0XX). In your answer you should write in the form of y=mx+b. For instance, y = 12.316x + 0.072
- The grid has six lettered boxes, each of which contains an item that may be used to answer the questions that follow. Items may be used more than once and there may be more than one correct item in response to a question. Place the letter(s) of the correct selection(s) on the appropriate line. Could dissolve Zn(OH)2 _____________ Could be used to prepare a buffer from __________ Halfway to the equivalence point in the titration of a weak, monoprotic acid with strong base ________ SO2-related atmospheric phenomenon __________ Species formed by a Lewis acid-base reaction ________ General condition required for precipitation to occur ________ [conj. base] = [conj. acid] in a buffer ___________The tetraethyl lead [Pb(C2H5)4] in a 25.00 mL sample of aviation gasoline was shaken with 15.00 mL of 0.02158 M I2. (Hint: one mole of I2 reacts with one mole of the tetraethyl lead). After the reaction was complete, the unused I2 was titrated with 4.86 mL of 0.02944 M thiosulfate solution. Calculate the weight in milligrams of [Pb(C2H5)4] (MW = 323.4 g/mol) in each liter of gasoline. Assign an oxidation number to the element specified in the compound or ion below: N:N2O2 N:NH4+What is the full equation (not the net ionic equation) for the chemical reaction of 0.001 M Fe(NO3)3 plus 0.0002 M NaSCN diluted up to 10 mL with 0.1M HNO3? Please include the acid that is the diluent.