Which one of the following indicators is best suited for titrating 0.40 M ammonia (pKb = 4.74) with 0.40 M HCl?   A.  Alizarin yellow, pKa = 11.2   B.  Phenol red, pKa = 7.9   C.  Bromocresol purple, pKa = 6.3   D.  Methyl red, pKa = 5.0   E.  Bromophenol blue, pKa = 3.9

Q: Which one of the following indicators is best suited for titrating 0.05 M pyridine (pKb = 8.82) with…

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Q: 3.) What is the pH at the equivalence point for the titration of 50.0 mL 0.20 M nitrous acid by 0.20…

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Q: Consider a titration of 40.00 mL of 0.1250 M Na2CO3 with 0.4000 M HCl.  Carbonic acid (H2CO3) has a…

A: The number of milliequivalents of sodium carbonate Na2CO3 = 40.00 x 0.1250 = 5 mmol The number of…

Q: A buffer solution after the addition of 20.0 mL of 1.00 M NaOH solution to 500.0 mL of a buffer…

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Q: What volume of 1.35 MHCI must be added to 0.287 L of 0.323 Mdimethylamine to produce a buffer with a…

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Q: Calculate the pH of 1.00 L of a buffer that contains 0.110 M HNO2 and 0.185 M NaNO2. What is the…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Q: 1. Calculate the pH at the following points in the titration of 55.8 mL of a 0.0350 molar acetic…

A: 55.8 mL of 0.0350 molar acetic acid is titrated with 0.107 M NaOH . Ka of acetic acid is 1.8 * 10-5…

Q: You are asked to go into the lab and prepare an acetic acid – sodium acetate buffer solution with a…

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Q: What is the pH of 1.00 L of a buffer that is  0.110 M nitrous acid (HNO2) and  0.180 M NaNO2? (pKa…

A: pH of buffer solution is calculated by using Henderson Hassel balch equation

Q: What masses of dimethylamine and dimethylammonium chloride do you need to prepare 3.00 L of pH =…

A: Given,  The volume of dimethyl amine and dimethyl ammonium chloride buffer = 3.00L The total…

Q: Buffer preparation: A 6.90 g sample of sodium nitrite (NANO2, 68.995) was dissolved in about 100. mL…

A: Given,  When 6.90 g sample of NaNO2 was dissolved in 100.0 mL of water and it is added to 500. mL of…

Q: A 20.0 mL sample of 0.150 M ethylamine is titrated with 0.0981 M HCI. What is the pH after the…

A: Given  mmoles of base = 0.15 M x 20 mL = 3 mmoles of acid = 0.0981 M x 5 mL = 0.4905…

Q: A 20.0 mL sample of 0.150 M ethylamine CH3CH2NH2 is titrated with 0.0981 M HCl. What is the pH after…

A: The objective of this question is to calculate the pH of a solution of ethylamine before any HCl is…

Q: 0. Which solution would you choose to suppress the dissolution of CaCO3? a. 0.200 M MaCl₂ b. 0.200…

A: Which solution would you choose to suppress the dissolution of CaCO3?option :a. 0.200 M MaCl2 b.…

Q: Titration volume to pH 5.5 using 5.3mM HCl (0.0053 M): Sample Titre (mL) 1a 25.20 1b 25.40 1c 25.35…

A: The objective of this question is to given chemical system, we encounter three key species: the…

Q: What is the effective pH range of a buffer (relative to the pKa of the weak acid component)?

A: The effective pH range of a buffer in relation to pKa of the weak acid component should not differ…

Q: Which of the following indicators is best suited to determine the equivalence point of a titration…

A: According to the question, we have titration curve of ammonium chloride and strong base.  We need to…

Q: Calculate the pCI during the titration of 50.0 mL of 0.0500 M NaCl with 0.100 M AgNO3 after the…

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Q: The pK, value for H₂S is 7.00. What mole ratio of KHS to H₂S is needed to prepare a buffer with a pH…

A: Given,pH of a buffer solution = 7.27pKa of H2S = 7.00

Q: What is the molar solubility of calcium hydroxide Ksp (Ca(OH)2) = 5.02 × 10-6J, when it is added to…

A: Given :  Ksp of Ca(OH)2 = 5.02 x 10-6

Q: Which titration curve shows the titration of a weak acid with a strong base? A. www C. ADS ww ***…

A: The above question is based on potentiometric titration of weak acid versus strong base. We have to…

Q: Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-3, K2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13). To…

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Q: In this experiment, the color change from pink/violet to colorless during the titration is caused…

A: We have to tell during this experiment, the color change from pink/violet to colorless during the…

Q: What is the pH of a buffer that is 120 M in formic acid, HCHO2 and 0.080 M in potassium formate…

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Q: Titration of 30.00 mL of 0.02502 M Na2C2O4 required 34.75 mL of a potassium permanganate solution.…

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Q: QUESTION 7 Slowly adding sodium chromate, Na2Cr04, to a solution containing Ba2+, Ca2+ and Pb2+ will…

A: Given: The Ksp of BaCrO4 = 8.5×101; The Ksp of CaCrO4 = 7.1x10-4 The Ksp of PbCrO4 = 2.0×10-14.

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for