A student dissolved a compound in water and added hydrochloric acid. No precipitate formed. Next, she bubbled H2S into this solution, but again, no precipitate formed. However, when she made the solution basic with ammonia and bubbled in H2S , a precipitate formed. Which of the following are possible as the cation in the compound? - CA2+ - Ag+ - Cd2+ - Mn2+

Q: A is solution is prepared by mixing 25 mL of 0.1 M HCHO2 with 25 mL of 0.2 M NACHO2. The pH of the…

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Q: Consider a buffer solution that is prepared with 40.00 ml of 0.300 M ammonia (NH3) and 40.00 ml of a…

A: We are given a buffer solution with NH4+(aq) as the acidic part and NH3(aq) as the basic part of the…

Q: A 21.7 mL sample of a H3PO4 (triprotic) solution is titrated with a 0.507 MNAOH solution. The…

A: We are given that the titration reaction of 21.7 mL of H3PO4 takes place with 44.1 mL, 0.507M NaOH…

Q: A student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous…

A: A buffer mixture is formed by the mixing of weak acid with its conjugate base or mixture of weak…

Q: a. Using the Bohr model of the atom, calculate the wavelength, frequency, wavenumber, and energy per…

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Q: 2) The ionization constant for NH3 in water is 1.8 x 10 - 5. Determine the hydroxide ion…

A: Welcome to bartleby ! As per company norms we cannot answer more than one question per session .So,…

Q: 3. If 50.00 mL of 1.00 M HC,H,O, (K, = 1.8 x 105) is titrated with 1.00 M NAOH. What is the pH of…

A: In this question , we are given a weak acid ( acetic acid ) and it is titrated with a strong base (…

Q: Question 10 Which of the following statements about buffered solu- tions are true? Select all that…

A: Buffer solution: A buffer solutions is an aqueous solution consisting of a mixture of a weak base…

Q: Consider the titration of 24.0 mL of 0.200 M Na A (a weak base) and 0.100 MH CI. Calculate the pH of…

A: No of moles of weak base, NaA = Molarity × Volume = 0.200M×24.0mL = 4.80 mmoles No of moles of…

Q: The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic…

A: Molarity of a solution represents the concentration of a solute in the solution, which is expressed…

Q: A 30.1 mL sample of a 0.322 M aqueous hypochlorous acid solution is titrated with a 0.472 M aqueous…

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Q: 29. Answer BOTH parts of this question. Show ALL arithmetical steps and chemical equations. (a)…

A: Here we are required to find the change in pH of buffer solution of HF/NaF  when NaoH is added

Q: How many mL of 0.24 M NaOH have to be added to reach the equivalence point when 15.00 mL of 0.24 M…

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Q: A buffer solution is prepared by dissolving 1.50 g each of benzoic acid, HC7H5O2, and sodium…

A: The objective of this question is to calculate the pH of a buffer solution prepared by dissolving…

Q: For each of the following salts, write the dissociation reaction of the hydrolysis reactions for…

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Q: Let H2A represent a diprotic acid and let A2 represent its corresponding base. A 40.0 mL sample of…

A: Diprotic acid is an acid that can give two hydrogen ions (H+) or protons per molecule in an aqueous…

Q: A solution made with 0.137 moles of a triprotic acid (H3A, K1=9.15 × 10-2; Ka2=9.03 × 10-5;…

A: Diprotic acid pKa  = - log Ka  pKa1    = -log Ka1           =  - log (9.15 * 10-2 )          =…

Q: A 25.00-mL sample of H2C2O4 solution required 43.88 mL of 0.1891 M NaOH solution to titrate it to…

A: The reaction is a neutralization reaction in which an acid reacts with a base to give salt and…

Q: If the actual mass of a base used (sodium citrate dihydrate) in a buffer solution is 1.5 g, and the…

A: Given,  Actual mass of base (sodium citrate dihydrate) = 1.5 g  Concentration of the acid (ammonium…

Q: For the determination of basic species in 0.1878 g Talcid sample; 20 mL of 0.1009 M HCl solution was…

A: The % base amount in CaCO3 is to be determined from the given data. Given: Mass of sample = 0.1878 g…

Q: A basic solution contains the iodide and phosphate ions that are to be separated via selective…

A: A salt will precipitate only when the ionic product of the concentration of ions exceeds its Ksp…

Q: Addition of 15 mL 0.1 M NaOH solution to 25 mL 0.1 M CH3COOH solution produces a buffer solution.…

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Q: 100 mL aliquot of a solution containing HCl and H3PO4 is titrated with 0.200 mol/L of NaOH. The…

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Q: Which of the compounds is more soluble in an acidic solution than in pure water? BaS PbCl₂ CaCO3…

A: A basic salt is more soluble in acidic solutions while an acidic salt is soluble in basuc solutions.…

Q: Let HA represent a weak acid. A 27.5 mL sample of 0.20 M HA was titrated with 0.25 M NaOH. The…

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Q: Most carbonates are insoluble in water. Small concentrations of Mg2* in tap water can react with…

A: Since you have asked multiple questions, we will solve first three questions for you. If you want…

Q: The pH of the buffer solution in part A is 4.70. 17.5 mL of 9.50x10-3 mol L1 HCI solution was added…

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