How does the addition of few drops of molar nitric acid affect the pH of a solution containing 0.05mol/dm3 benzoic acid and 0.05mol/dm3 of potassium benzoate? What general name is given to such a solution?
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: Benzoic acid and water were added to the test tube labeled "b.a." After stirring the mixture, sodium…
A:
Q: (a) How many grams of ammonium bromide would have to be added to exactly 500 cm³ of 0.10 M NH 3…
A:
Q: How many milliliters of 0.10 M Pb(NO 3 )2 should be used to make ni(en)(h2o)4so4 10% mole excess?
A: This question must have a known value of the amount of Pb(SO4)2 produced.... So see the complete…
Q: Determine the pH of (a) a 0.40 M CH3COOH solution and (b) a solution that is 0.40 M CH3COOH and 0.20…
A: a) CH3COOH dissociates in the solution as: CH3COOH⇌CH3COO-+H+Initial…
Q: form whan lo0.0ml of 4.0xl0 MgC(NQ); -4 My(NG)2 l00,0ml of 2.0 x10"M Na OH ? "M #14.Will a ppt. ù…
A: Given : Concentration of NaOH = 2.0 X 10-4 M Volume of NaOH solution = 100.0 mL = 0.100 L…
Q: When 1.0 L of a saturated solution of lead(II) bromide is evaporated to dryness, there is 0.557g of…
A: It is given that when 1.0 L of a saturated solution of lead (II) bromide is evaporated to dryness,…
Q: The following are results from Part A of Lab 3. Identify the unknown metal cation Table 1:…
A:
Q: What volumes of 0.100 M acetic acid and 0.100 M sodium acetate would be required to produce 1.00 L…
A:
Q: Calculate the volume, in milliliters, of 0.170 M NaOH that must be added to 319 mL 0.0439 M…
A: pH of the solution can be calculated using the following equation: pH = pKa + log ([salt]/[acid])
Q: A particular solution is 0.05M with respect to ethanoic acid and 0.2M with respect to sodium…
A:
Q: Construct a curve for the titration of 20.00 mL 0.0500 N succinic acid (HO;CCH;CH;,CO,H) by 0.1000 N…
A: We can build the bend for titration of corrosive against a base by taking the pH on the y-pivot and…
Q: A biochemist needs to preserve anenzy.me 250 mL 0.50 M acetate buffer at in pH 5.5. (Ka of acetic…
A: pKa of acetic acid pKa = -log Ka = - log (1.8 * 10-5) = 5 - log 1.8 = 5 -…
Q: when 15.00 mL of 2.00 x 10^-6 M lithium sulfate is mixed with 17.00 mL of 1.00 x 10^-6M sodium…
A: Given: Concentration of lithium sulfate i.e. Li2SO4 = 2.00 × 10-6 M Volume of Li2SO4 solution =…
Q: Using the experimental data at 1/2 the equivalence point volume, calculate the Ka of acetic acid.
A: When acetic acid reacts with NaOH, the following reaction occurs: CH3COOH+NaOH→CH3COONa+H2O
Q: What would be your best choice to prepare a 100 mL of pH 5.5 buffer strength 0.50 M? (pKa of acetic…
A: pH of buffer solution = 5.5
Q: Give the detailed step-by-step procedure for the preparation of 20 mL of 0.0005 M KOH
A: GivenMolarity of KOH solution = 0.0005 MVolume of Solution = 20 mLMolar mass of KOH =56.1 g/mole
Q: In a two-vessel technique titration set-up, what is the unknown substance if the volume of…
A: Given A titration method is given we have to find out the unknown substance .
Q: How many moles of SrSO4 will dissolve in 4.0 x 102 mL of 0.060 M Sr(NO3)2? The Ksp of SrSO4 is 3.2 x…
A: We will dissociate SrSO4 and then find solubility of it. Then calculate moles of it.
Q: Explain the role of phenolphthalein in the standardization of NaOH with KHP
A: Phenolphthalein is an organic compound which is colorless in acidic solution and pink in basic…
Q: If you prepare 200mL of this buffer, how much of the bolded reagent would you weigh out? Answers…
A: We have to prepare a 200 mL buffer solution by adding the desired concentrations of Tris base,…
Q: You prepare a buffer solution from 10.0 mL of 0.100 M MOPS (3-morpholinopropane-1-sulfonic acid) and…
A: A buffer is a solution that can resist pH change upon the addition of an acid or base. It is able to…
Q: You carry out the alkalinity titration of 100 mL water sample and find that it requires 12 ml of…
A: A numerical problem based on environmental pollution that is to be accomplished.
Q: FeCl3 and MgCl2 solution was prepared by dissolving FeCl3 (AR) and MgCl2 (AR) in distilled water.…
A: Hydrolysis is the process in which water reacts with a compound. The required compounds in this…
Q: Write the values of Y and X. H2SO4 CH;CH=CH2 + H2O CH3CH-CH2 H HỌ 2-propanol an alcohol The pKa of a…
A: The acid dissociation constant Ka is the representation of acidic strength of a solution and pKa is…
Q: Make the following solution. use formula clv1=c2v2 Buffer C1 with 0.15 M KCI. Make 10 ml -20 mM…
A: A solution is prepared by dissolving a known mass of solute into a specific amount of solvent. A…
Q: What volume (mL) of 0.201 M potassium hydroxide will it take to reach the equivalence point in a…
A: The balanced reaction between potassium hydroxide and triprotic acid is as follows: 3 KOH (aq) +…
Q: A 20.00-mL sample of a saturated Sr(OH)₂ solution requires 24.36 mL of a 0.0550 M HCl solution to…
A: The net balanced chemical equation can be written as: Given: Volume of Sr(OH)2 =20.0mL= 0.020 L…
Q: n RPLC, The retention of a basic analyte in RPLC decreases as the mobile phase pH increases. True or…
A: Silica gel and alumina are highly polar so they interact strongly with polar compounds and solvent…
Q: Aqueous Solutions and Chemical Equilibria. At 25°C, what are the molar H3O+ and OH concentrations in…
A: Answer: The dissociation constant is the equilibrium constant when either the weak base dissolves in…
Q: 10.0 mL of 0.100 M HCl solution was added to 20.0 mL of 0.100 M (CH3CH2)3N (triethylamine). Kb…
A: First we have to determine concentration of HCl and base
Q: 15.3 mL of 0.1 M hydrochloric acid is used to titrate a 25 mL alkaline sample to achieve…
A: Given: Volume of acid = 15.3 mL Concentration of acid = 0.1 M Volume of alkaline sample = 25 mL
Q: Calculate the degree of dissociations of 0.10 M 0.8 acetic acid solution Ka= 1.5*10^-2 that exist in…
A: Degree of dissociation of acetic acid ( α ) : Ka =Cα21-α 1.5 x 10-2 = 0.10 × α21-α 0.15 = α21-α α…
Q: How would you prepare a benzoic acid/benzoate buffer with a pH pf 4.25, starting with 5.0 L of 0.050…
A:
Q: What will the pH of the mixture that contains: 250 mL of 0.12 M of H2SO4 and 150 mL of 0.04 M of…
A: Let's first consider the neutralization reaction between H2SO4 and NaOH.
Q: (a) What weight of glycine (pKal- 2.4; pKa - 9.6), and what volume of IM HCI are required to make…
A: At the half-equivalence point, the pKa for the solution is equal to pH of the solution. In 100 mL of…
Q: In a two-vessel technique titration set-up, what is the unknown substance if the volume of…
A: To determine the mixture of substances in the sample
Q: Determine the H+ concentration after 90.0 mL of 0.230 M (CH3)2NH is mixed with 75.0 mL of 0.300 M…
A: Answer:- This question is answered by using the simple concept of chemical reaction of weak base and…
Q: What is the pOH of solution that made from adding 4.2 gm sodium ethanoate to 1 liter of 0.02 M…
A: (1) The molar mass of sodium ethanoate = 82 g/mol The concentration of ethanoic acid = 0.02 M The…
Q: As a stabilizer in a 3% solution of hydrogen peroxide is introduced: A) sodium bicarbonate B)…
A: The compound which is introduced to stabilizer in 3% solution of hydrogen peroxide is given below.
Q: Q1 (a) Consider following sentences as true or false. Briefly justify the answer. Acetic acid is a…
A: Acidic strength is a measure of ka value. Aromatics compound burns with sooty flame. Normality,…
Q: 5. What would be the pH of a 100.0 mL solution containing 0.24 M formic acid [HCHO₂; Ka = 1.8x10-4)…
A:
Q: Upon the addition of 30.00 mL of 0.350 M HCl to a 80.00-mL of the weak base amine (Kb = 4.95 x…
A: When weak acid reacts with strong base then a buffer solution is formed. pH of a buffer Solution…
Q: a. Calculate for the concentrations of the five standard solutions. b. Give the equation of the line…
A: A question based on quantitative analysis and calibration graph that is to be accomplished.
Q: Rxn 3: H,0() H*(aq) + OH(aq) Rxn 6: M(OH),(s) M²°(aq) + 2 0H (aq) M= Zn Start with 0.1 M Zn(NO3)2 in…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: What is the Qsp of a solution mixture Al(OH)3 formed from 10 mL 1.00M C6H5NH2 and 15 mL 0.10M…
A:
Q: In a titration of methylamine CH3NH2 (pKb = 3.34) with HNO3, which of the following color indicator…
A: At equivalence point, the weak base, methylamine CH3NH2 is completely converted to the conjugate…
Q: 0.01M 50 mL Na2CO3 sodium carbonate solution with initial pH and 0.1 M HCl during titeration 1.and…
A: The question is based on the concept of titration of sodium carbonate with hydrochloric acid. we…
How does the addition of few drops of molar nitric acid affect the pH of a solution containing 0.05mol/dm3 benzoic acid and 0.05mol/dm3 of potassium benzoate?
What general name is given to such a solution?
Step by step
Solved in 2 steps with 3 images
- 10.0 mL of 0.100 M HCl solution was added to 20.0 mL of 0.100 M (CH3CH2)3N (triethylamine). Kb (CH3CH2)3N = 5.2 x 10–4 Determine the following: a) Concentration of (CH3CH2)3N that did not react with acid. b) Concentration of (CH3CH2)3NH+ formed from the reaction with acid. c) pOH.Q4- How many grams of sodium hydroxide (M.wt=58.5) can be added to 2.5 liter of a solution mixture of 0.3M ammonia and 0.15M ammonium chloride without changing the pOH by more than 1unit? Kb=1.8× 10-5 ?How many moles of SrSO4 will dissolve in 4.0 x 102 mL of 0.060 M Sr(NO3)2? The Ksp of SrSO4 is 3.2 x 10-7
- Calculate the degree of dissociations of 0.10 M 0.8 acetic acid solution Ka= 1.5*10^-2 that exist in 0.15M KCl solution.What is the effect of buffer additives (organic acids) on the enhancement factor?A particular solution is 0.05M with respect to ethanoic acid and 0.2M with respect to sodium ethanoate (Ka for ethanoic acid = 2 x 10-5moldm-3). What will be the effect on the pH of the solution when one or two drops of 0.1M HCl are added to 1dm3 of solution. Explain your answer.
- When you have a triethylamine that is titrated with 0,100 M/L of HCI and changes color after 18.23 ml and the equivalence weight is 92,04 gram how would the chemical structure look?What is the ratio of acetate ion to acetic acid (Ka = 1.76×10–5) in a solution containing these compounds at pH 3.52 ?Write your answer as a decimal and not as a fraction.What is the role of Glycerin in the assay of Boric Acid?I. The reagent prevents the formation of pink color earlier than the expected endpoint.II. The reagent allows the reaction of protons from the acid sample with the hydroxyl ions from the titrant.III. It enhances the water solubility of the difficultly soluble boric acid. a. I, II & III b. II & III c. I & II d. I only e. I & III
- How would you prepare a benzoic acid/benzoate buffer with a pH pf 4.25, starting with 5.0 L of 0.050 M sodium benzoate (C6H5COONa) solution and adding the acidic component (Ka of benzoic acid (C6H5COOH) = 6.3 x 10-^5)?calculate the pH after addition of 0.00, 5.00, 15.00, 25.00, 40.00, 45.00, 49.00, 50.00, 51.00, 55.00 and 60.00 ml of 0.1000M HCl in the titration of 50.00 ml of b) 0.1000 M ethylamineDetermine the pH of (a) a 0.40 M CH3COOH solution and (b) a solution that is 0.40 M CH3COOH and 0.20 M CH3 Ka for CH3COOH = 1.8 X 10-5. Could you have predicted that the pH would rise after addition of sodium acetate to pure 0.40 M acetic acid from part (a) by applying Le Chatelier’s principle?