A buffer is created by combining 150.0 mL of 0.20 M HCHO2 with 75.0 mL of 0.20 M NaOH. Part A Determine the pH of the buffer. Express your answer using two decimal places.

Q: What is the pH of the buffer made by adding 30.0 mL of 0.15 M HC2H3O2 ( acetic acid ) to 70 mL of…

A: Concentration of both acid and salt will changed if we add both because volume is increases.

Q: Answer the following questions about preparing the same buffer solution using three different…

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Q: The pH of a cyanoacetic acid/sodium cyanoacetate buffer in which the concentration of the weak acid…

A: It is given that, Molarity of weak acid, cyanoacetic acid = 0.140 M Molarity of its conjugate base,…

Q: A solution containing 50.0 mL of 0.180 M NH3 (Kb = 1.77 x 10¯5) is being titrated with 0.360 M HCl.…

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Q: A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is titrated with 0.500 M HNO3. Calculate the pH after…

A: Given: Volume of NH3 is 75 mL Molarity of NH3 is 0.200 M Molarity of HNO3 is 0.500 M Volume of HNO3…

Q: The Kb of hydroxylamine, NH2OH, is 1.10 * 10 - 8. A buffer solution is prepared by mixing 100.0 mL…

A: The concentration of NH2OH = 0.36 M Volume of NH2OH =100 mL = 0.1 L The concentration of HCl = 0.26…

Q: If 24.6 mL of 0.053 M hydrochloric acid (HCI) solution is added to 22 mL of 0.144 M ammonia (NH3)…

A: Given : Concentration of HCl = 0.053 M Volume of HCl solution added = 24.6 mL = 0.0246 L…

Q: Consider the bases in the table. Which base would be the best choice for preparing a pH =…

A: Henderson-Hasselbalch equation: This equation is used to calculate the pH values for the buffer. For…

Q: How many grams of dry NH,Cl need to be added to 2.00 L of a 0.800 M solution of ammonia, NH3, to…

A: Given, Concentration of NH3, [NH3] = 0.8 MVolume of solution, V = 2 LpH = 8.64Base dissociation…

Q: Consider a 1.0 L buffer containing 0.11 mol L-1 HF and 0.11 mol L-1 F-. What is the pH of the…

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Q: What is the pH of a buffer made using 45.0 mL of 0.750 M HC3H5O2 (propanoic acid, Ka = 1.3×10–5) and…

A: Given that: Concentration of HC3H5O2 = 0.750 MConcentration of NaC3H5O2 = 0.700 MVolume of HC3H5O2 =…

Q: Determine the pH at the point in the titration of 40.0 mL of .200 M HC4H7O2 with .100 M Sr(OH)2…

A: The reaction between acid and base is written below. 2C3H7COOH (aq) + Sr(OH)2 (aq) ⇌ 2H2O (l) +…

Q: For the titration of 75 mL of 0.10 M acetic acid with 0.10 M NAOH, calculate the pH. For acetic…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A student titrated 30.00 mL of a weak base solution, 0.150 M CH&NH2 (Kb = 4.40 × 104), with 0.100 M…

A: Titration is an experimental method of analysis where a solution of known concentration is titrated…

Q: A 75.0 mL volume of 0.200 mol L-1 NH3 (Kb = 1.8 x 10 -5) is titrated with 0.500 mol L-1 HNO3.…

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Q: Calculate the pH value when titrated between 25 ml of weak acid HA concentration of 0.3 (104 x 6.6…

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Q: Calculate the pH at the endpoint of the titration, when 30.0 mL of 0.100M NaOH have been added to…

A: First the moles of NaOH and acetic acid present are calculated.

Q: Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid  and 25 mL of…

A: Given  Volume of lactic acid    = 75 mL                                      = 0.075 Liter…

Q: A buffer solution was prepared by mixing 568.0 mL of 0.299 M NaOCI and 210.8 mL of 0.174 M HOCI.…

A: Given data :

Q: 15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What…

A: Number of moles of HF and NaOH is calculated as follows, 1 mL = 0.001 L

Q: A sample containing 50.00 mL of 0.1000 M hydrazoic acid (HN3) is being titrated with 0.1000 M sodium…

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Q: A buffer solution is prepared by adding 40.0 g of sodium acetate CH;COON to 500 mL of a 0.200 M…

A: The no of moles of sodium acetate and acetic acid are as follows:

Q: Describe how to prepare 1.0 L of buffer solution of pH 5.0, that can tolerate the addition of 0.3…

A: A buffer is a solution that resists the change in pH upon addition of a small amount of an acid (HA)…

Q: A buffer is prepared by adding 150mL of KOH 1.00M to 250mL of H2PO4 1.00M. Calculate the moles of…

A: In the given question we have to calculate the mole of HCl that will be addade to this system to…

Q: A 10.0-mL solution of 0.300 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after…

A: An acid or a base is classified as strong or weak acid base based on the amount of dissociation the…

Q: Q2. 0.5 M acetic acid in volume of 50 mL is titrated with 0.2 M NAOH after 50 ml of 0.2 M NaOH is…

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Q: What is the pH at equivalence point when 100 mL of 0.1 M HCl is titrated with 0.1 M NaOH?

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Q: Calculate the pH of a buffer solution prepared by dissolving 0,48 mole of sodium fluoride (NaF) and…

A: Buffer solution is a type of solution which resist the pH change when small amount of acid or base…

Q: 15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What…

A: The chemical reaction is: HF + NaOH → NaF + H2O Now, Moles = Concentration x volume  Millimoles of…

Q: Calculate the pH at the stoichiometric point when 25 mL of 0.10 M pyridine is titrated with 0.32 M…

A: Moles can be calculated by using following formula,Moles = Molarity × Volume

Q: If I have a buffer solution made up of 5.0 mL of 0.500 M sodium acetate (NaCH3COO) and 45.0 mL of…

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Q: Calculate the pH at the equivalence point when 20.0 mL of 0.450 M HCl is titrated with 20.0 mL of…

A: HCl (aq)  +   NaOH (aq)  ------>  NaCl (aq)  +   H2O pH = -log[H+]

Q: Consider the titration of 90.0 mL of .141 M Ba(OH)2 by .564 M HCl. Calculate the pH of the resulting…

A: In the given question we have to calculate the pH of Solution after adding  acid of 11.0 mL and 27.0…

Q: 15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What…

A: Number of moles of HF and NaOH is calculated as follows, 1 mL = 0.001 L

Q: Buffer A: Calculate the mass of sodium acetate that must be added to make 100.0 mL of an acetic…

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Q: 10. 40.0mL of 0.10M HCl was added to 50.0 mL of 0.10M NaOH and the mixture was stirred, then tested…

A: The reaction taking place is,

Q: 1.00L of  a buffer is created to be 0.100M in HOAc and 0.100M in NaOAc. What is the pH of the…

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Q: Write the titration reaction of 100 mL of 0.100 M anilinium bromide (“aminobenzene . HBr”) +.100 M…

A: In analytical chemistry, titrations are carried out to determine the concentrations of unknown acids…

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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Q: A buffer is made using 100.0 mL of 0.100 M CH3 CH2 COOH (propanoic acid) and 100.0 mL of 0.100 M…

A: Buffer solution is resistance to pH change . If small amount of acid or base is used , then there is…

Q: A buffer was prepared from a concentrated propanoic acid (10.0 M) solution in two steps. First, 10.0…

A: 10.0 mL of concentrated propanoic acid solution has a concentration of 10.0 M, was diluted by…

Q: Consider exactly one litre of a hydrofluoric acid buffer solution, containing 0.800 M HF and 0.528 M…

A: Buffer solution are those which resist a change in their pH upon addition  of an acid or a base or…

Q: A 350-mL buffer solution is 0.500 M in chlorous acid (HClO2, Ka=1.1×10−2) and 0.200 M in sodium…

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Q: Titrations: Calculate the pH when 73 mL of 1.25 M ammonia (K = 1.8x10-) is added to 28 mL of 0.85 M…

A: 1.) To calculate pH , first we would Calculate moles of both acid and base.  Then we would write a…

Q: A solution was prepared by dissolving 21.5 g of benzoic acid, HC;H5O2, and 37.7 g of sodium…

A: Given that:  Mass of benzoic acid = 21.5g  Molar mass of benzoic acid = 122g/mol Moles of benzoic…

Q: Prepare 100 mL of 0.01 M acetate buffer, pH 3.80, from stock solutions of 0.1 M acetic acid and 0.02…

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Q: Find the pH of solution when 75.0 mL of 0.20-M acetic acid, HC₂H3O2, is titrated with 20.0 mL of…

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Q: You start with 100.0 mL of 0.20 M CH3COOH in a flask.  The Ka of CH3COOH is 1.8 x 10-5. You add…

A: After adding NaOH we get buffer solution as it form mixture of weak acid and salt of this weak acid…

Q: find the acidity function when adding 5 ml of NaOH Calculate the pH value when titrated between 25…

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Q: How many grams of dry NHạ Cl need to be added to 2.00 L of a 0.100 M solution of ammonia, NHa, to…

A: In this question, we have to find out the correct answer of given problem by the help of the…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.