How many moles of sodium hydroxide would have to be added to 150 mL of a 0.479 M hypochlorous acid solution, in order to prepare a buffer with a pH of 7.210? ____ moles

Q: Calculate the pH of 50.00 ml distilled water after the addition of 4.00 ml 0.10 M HCl. 2. Calculate…

A: Given the volume of distilled water = 50.00 mL Volume of 0.10 M HCl added = 4.00 mL * (1L/1000 mL) =…

Q: Buffer: HC₂0/C₂O²- What mass of Na2C2O4 must be added to 500. mL of 0.25 M HC2O4- to generate a…

A: We have to calculate the mass of salt to prepare the given buffer solution

Q: Calculate the pH of a buffer solution when 32.0 mL of a 0.25 M H2CO3 is mixed with 20.0 mL of a 0.15…

A: Recall Henderson hasselbalch equation to calculate pH of a acidic buffer…

Q: Given the following info about a 1L solution determine the final pH of the buffer after the addition…

A: From given  Initially we are calculating initial concentration and finally final pH is calculated as…

Q: Calculate the mass of KNO2 (85.10 g/mol) that must be added to 125 mL 0.220 M HNO2 to have a buffer…

A: Given: pH=4.0 Ka of HNO2.=4.5×10-4 Molarity of HNO2=0.220 M. The molar mass of KNO2=85.10 g/mol

Q: How many grams of solid ammonlum chloride should be added to 0.500 L. of a 0.128M ammonia solution…

A: Given:Buffer solution of ammonium chloride and ammonia solution. Ammonia solution = 0.128M Volume of…

Q: What mass of ammonium chloride should you add to 2.55 L of a0.155 M NH3 solution to obtain a buffer…

A: Henderson-Hesselbalch equation for weak base and its salt is given by pOH=pKb+log[salt]/[base] pKb…

Q: 3. Add 30 ml of 0.1 M HCI. To make the buffer, we need to have significant amounts of both HCO3 and…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: The following question refers to a 2.0-liter buffered solution created from 0.34 M NH3 (Kb = 1.8 ×…

A: Given, Kb = 1.8 × 10-5 Then, pKb= -log(kb)                  = -log(1.8 × 10-5)                  =…

Q: A 1.39 L buffer solution consists of 0.144 M butanoic acid and 0.328 M sodium butanoate. Calculate…

A: when a weak acid and its salt with strong base are present in a solution,they form a buffer…

Q: An aqueous solution contains 0.464 M hypochlorous acid.How many mL of 0.364 M sodium hydroxide would…

A: The reaction as follows,

Q: A 35.7 mL sample of a 0.324 M aqueous acetic acid solution is titrated with a 0.422 M aqueous sodium…

A:

Q: Which can act as acidic buffer? 1. NH4CI + NH40H 2. CH3COOH + CH3COONA 3. 40 mL of 0.1 M NaCN + 20…

A: An acidic buffer has pH less than 7. These are made from a weak acid and its salt, generally a…

Q: When 30 .00 mL of 0.1011 M HCl in 50 mL of deionized water is titrated against 0.09889 M NaOH, the…

A: The reaction between HCl and NaOH will take place as follows: Volume of NaOH required to reach the…

Q: prepare a "ph curve" as follows: a) Find the pH of the acid solution just befor the end point when…

A: The equivalence point is defined as the point in the titration when the analyte is completely…

Q: A 22.4 mL sample of 0.155 M HCl is titrated with 0.238 M NaOH. what is the pH after the addition of…

A:

Q: Which acid(s) could you use to make a buffer with pH = 10.20 (choose all that would work) a. NH4+…

A: Given :Different type of acid.  To find : Acids that are used to make butter with PH = 10.20…

Q: During the titration of 50.0mL of 0.1098M HCl using a standardized 0.0750M NaOH solution, what would…

A: Given,  [HCl] = 0.1098 M  Volume of HCl in mL = 50.0 mL  [NaOH] = 0.0750 M  a). Calculate the pH…

Q: Consider a buffer solution that is 0.47 M HCN and 0.47 M NaCN. (Ka(HCN) = 4.9 × 10−10) Calculate…

A: After addition of 0.20 mol of NaOH the [ HCN ] = ( 0.47 - 0.20 ) = 0.27 M And [ NaCN ] = ( 0.47 +…

Q: Determine the molarity of the NaOH solution

A: V1S1=V2S2........I V1- volume of NaOH in ml (22.5 ml)  S1- Concentration of NaOH in N (? M) V2-…

Q: A chemist needs a buffer with pH 4.15. How many milliliters of pure acetic acid (density = 1.049…

A: The expression of Henderson-Hasselbalch displays that to calculate the pH of any buffer solution,…

Q: You want to prepare a buffer solution with pH equal to 3. How many grams of NaF (41.99 g/mol) should…

A: In this, we need to find oute moles of NaF first. Using that moles and molar mass for NaF, calculate…

Q: How many grams of NaHCO3 should be mixed with 4.500 g of NaCO3 to produce 150.0 mL of buffer with a…

A: The given weight of Na2CO3 is 4.500 g. The molar mass of Na2CO3 is 105.98 g/mol. The formula to…

Q: What mass (in grams) of sodium acetate (CH3COONa) must be added to 100.00 mL of a 0.109 M solution…

A: Acetic acid is a weak monoprotic acid. Since the pH of monoprotic acid buffer is given by…

Q: Given the following info about a 1L solution determine the final pH of the buffer after the addition…

A: We have to calculate the final pH of buffer solution.

Q: Calculate the pH of a buffer solution prepared by mixing 10 g KH2PO4 with 50 g K2HPO4 in 1 liter of…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid.…

Q: 15.0 mL of the 1.0 M LIOH are added to 50.0 mL of 0.20 M H2SO4. What is the pH at this point in the…

A: Here, we have to find the pH of a titration when 15.0 mL of the 1.0 M LiOH are added to 50.0 mL of…

Q: A 25.30 mL sample of 0.0897 M HCl is titrated with 0.111 M NaOH. Determine the pH of the solution…

A: Given: Volume of HCl = 25.30 mL Molarity of HCl = 0.0897 M  Molarity of NaOH = 0.111 M Volume of…

Q: Calculate the change in pH when 7.00 mLof 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: A buffer solution was made by adding 9.35 mL of 0.50 M acetic acid and 0.628 g sodium acetate with…

A:

Q: Which of the following solutions is a buffer? (a) A solutionmade by mixing 100 mL of 0.100 M CH3COOH…

A: Buffers have constant pH.  If a small amount of acid or base is added, it will resist the change in…

Q: A buffer solution was made by adding 2.27 mL of 0.50 M acetic acid and 0.696 g sodium acetate with…

A:

Q: A buffer is prepared by adding 115 mL of 0.30 M NH3 to 135 mL of 0.15 M NH4NO3. What is the pH of…

A: A buffer is prepared by adding 115 mL of 0.30 M NH3 to 135 mL of 0.15 M NH4NO3. The pH of the final…

Q: What volumes of 0.200 MHCOOH and 2.00 MNaOHwould make 500. mL of a buffer with the pH of one made…

A: This problem is solved by using Henderson equating for calculation of pH of buffer. pH=pKa-logweak…

Q: What volume of 0.50 M HNO3 should be added to 200. mL of 0.25 M NH3 in order to create a buffer with…

A: Given, pH of the buffer= 9.0, pOH = 14 - pH = 5.0 Volume of 0.2 (M) NH3 = 200 mL = 0.2L, pKb (NH3) =…

Q: A 41.1 mL sample of a 0.486 M aqueous hydrocyanic acid solution is titrated with a 0.404 M aqueous…

A:

Q: A 39.0 mL sample of a 0.540 M aqueous hypochlorous acid solution is titrated with a 0.390 M aqueous…

A: Given that : The volume of hypochlorous acid = 39.0 mL The molarity of hypochlorous acid = 0.540 M…

Q: Exactly 100 mL of 0.10 M HNO, are titrated with a 0.10 M NaOH solution. What is the pH at the…

A: Given : Concentration of HNO2 = 0.10 M Volume of HNO2 = 100 mL Concentration of NaOH = 0.10 M

Q: a. What is the pH of a buffer solution that is 0.12 M NH3 and 0.12 M NH4 +? К, for NH3 is 1.8 x 10-5…

A: The solution which resist the change in pH by addition of small amount of strong acid or a strong…

Q: Calculate the pH in a titration after 10.00 mL of a .2000 M aqueous LIOH solution is added to 50.00…

A:

Q: When a 22.9 ml. sample of a 0.338 M aqueous hypochlorous acid solution is titrated with a 0.367 M…

A:

Q: Formic acid, HFor, has a K, value equal to about 1.8 x 104. A student is asked to prepare a buffer…

A: Since the pH of monoprotic acid buffer is given by Henderson-Hasselbalch equation as  where pKa =…

Q: a buffer is prepared by adding 115 mL of .30M NH3 to 135 mL fof .15 M NH4NO3. what is the pH of the…

A: A buffer is prepared by adding 115 mL of 0.30 M NH3 to 135 mL of 0.15 M NH4NO3. The pH of the final…

Q: a. What is the pH of a buffer solution that is 0.16 M NH3 and 0.16 M NH,+? K, for NH3 is 1.8 x 10-5.…

A:

Q: A 25.0 mL sample of 1.00 M HCI is titrated with 50.0 ml of 1.00 M NaOH solution. What is the pH of…

A:

Q: 22. Which of the following mixture could be considered as a buffer? Hìnt Try to react each mixture…

A: A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate…

Q: Formic acid, HFor, has a K, value of 1.8 x 10-4. You need to prepare 125 mL of a buffer hav- ing a…

A:

Q: A buffer solution that is 0.488 M in HCN and 0.488 M in NaCN has a pH of 9.40. The addition of 0.01…

A: solution- From henderson equation that pH = 14 -12pKa +log [salt[acid] [salt] = 0.398 M [acid] =…

Q: Calculate the volume of 0.550 M sodium acetate that must be added to 20. mL of 0.450 M acetic acid…

A: Given: sodium acetate = 0.550 M acetic acid =  0.450 M volume of acetic acid = 20 ml buffer pH =…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.