Calculate the weight in grams of the corresponding sodium salt that must be added to 100 ml of the indicated acid solution to obtain the buffer solution at pH 2.68. Molecular Weight of the salt 46.03g/mol Formic acid 0.25M Ka = 1.7x 10-4

Q: The sign of the entropy chance when a drop of food coloring diffuses throughout a glass of clear…

A: Entropy is the measure of Randomness . It is defined as the capacity of things to move from a highly…

Q: A solution is made by dissolving 0.0015 mole Ba(OH)2 in enough water to make 1.50 liter of solution.…

A: Given- Moles of Ba(OH)2=0.0015mol Volume of solution=1.50L  pH=? pOH=?

Q: All of the following compounds are insoluble in water except: AgCl BaSO4 CaCO3 CuCl2 Cu(OH)2

A: Answer:- This question is answered by using the simple concept of solubility of the ionic compounds…

Q: Weight of crude/pure product: 0.819/0.047g Percent yield: Theoretical Yield: Melting Point…

A: A question based on general chemistry that is to be accomplished.

Q: How many grams of CH3COONa Ka=1.8x10-5 must be added to obtain 400 mL of a buffer solution with a pH…

A: The pH of CH3COOH + CH3COONa  buffer is given by Henderson-Hasselbalch equation  pH = pKa +…

Q: Part III. Nomenclature of Organic Compounds Direction: Name the following hydrocarbons. 17. 24. OH…

A: As here posted multiple questions in one picture so we have to solve first three parts of it . And…

Q: Complete the table:   Solute Mass of solute Moles of solute Volume of solution Molarity of…

A:

Q: What is the conjugate base of HSO4? OHSO3²- O SO4 O H₂SO4 2- O SO4²- Onone of the above

A:

Q: The molar heat capacity at constant pressure of H2O (g) at 1.00 atm is given approximately by the…

A: Given data  Cp = 30.54 + 1.03 * 10 ^ - 2 * T Number of mol = 2 mol Pressure = 1 atm T1= 300k T2=…

Q: MULTI-STEP HEAT PROBLEMS The data below refers to an unknown substance. X. Boiling Heat of Point…

A:

Q: A homeopathic teething gel states on its product label that it contains 0.0000003% alkaloid. Express…

A:

Q: Upon reaction of 1.274 g of copper sulfate with excess zinc metal , 0.392 g copper metal was…

A: To calculate percent yield , we need actual yield and theoretical yield.  Actual yield is copper is…

Q: What mass of HCI, in grams, is required to react with 0.840 g of Al(OH)3? Al(OH)₂ (s) + 3HCl(aq) →…

A:

Q: What is the concentration in molarity of 140 ppm of Hg?

A: In this question we are given 140 ppm of Hg. We are required to find the concentration in terms of…

Q: Give good solution ASAP thanks For the each element, convert the given mole amount to grams.   a)…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: In which of the species ICl6 − and SF4 is the bond angle closest to that predicted by the VSEPR…

A:

Q: 10) NiCO3 + H2SO4 --> NiSO4 + CO2 + H2O If you start with 20.0 g of NiCO3 and 16.5 g of H2SO4 how…

A:

Q: In a study of the decomposition of ammonia on a platinum surface at 856 °C NH3-1/2 N₂ + 3/2 H₂ the…

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

Q: Write the empirical formula corresponding to Cr₄O₆

A:

Q: 1. Calculate the pH of the following solutions: a. A solution prepared by mixing 30.0 mL of 2.0M…

A: #1:  #(a): Formic acid(HCOOH) is a weak acid with pKa = 3.75  NaOH is a strong base.

Q: What mass of HC1, in grams, is required to react with 0.840 g of Al(OH)3? Al(OH)3 (s) + 3HCl(aq) →…

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

Q: Upload a drawing that shows what you think the structure of hydrogen atoms looks like. (Please don't…

A: The diagrammatic representation of atom consisting of nucleus and electrons and other energy level…

Q: Ethyl alcohol (C2H6O) is prepared by the reaction of ethylene (C2H4) with water; C2H4 (g) + H2O (l)…

A: Molar mass of ethylene is 28.05 g/mol.          Molar mass of ethyl alcohol is 46.07 g/mol

Q: 18. When H₂(g) is mixed with CO2(g) at 1750 K, equilibrium is achieved according to the following…

A: We have to calculate the reaction quotient

Q: For a reaction, if AGO = 0, one can surely conclude that: AS⁰ = 0 ΔΗ = 0 AU O K = 1 ) K = 0

A:

Q: -OCH3 -OH -COOH -CH3 -CH=CH₂ -CH₂CH3 -CH(CH3)2 -C6H5 H -0.6 -1.0 -1.4 -1.7 -1.7 -1.8 -2.1 -2.9…

A:

Q: 3. An iron ore sample contains Fe₂Os together with other substances. Reaction of the ore with CO…

A:

Q: 11) Determine the molecular formula and the empirical formula. Grey = C, Red = O, White = H. (Can…

A: Introduction Molecular formulae = The number of atoms of each element in one molecule of a substance…

Q: A chemical engineer must calculate the maximum safe operating temperature of a high-pressure gas…

A: Given, The container used for the reaction is a cylinder that is 0.49 meters wide and 0.588 meters…

Q: equatorial, groups conformation. If a group divides its time equally betwee ax/eq. The table of…

A: Stereochemistry is a branch of chemistry in which we deal with three dimensional arrangement of…

Q: how many moles of nitrate ion are in 1.0 l of a 2.5 m mg(no3)2 solution?

A:

Q: 1. Write the balanced nuclear reaction equations for the following. Write the mass number, atomic…

A: Alpha decay : Alpha particles have two positive charges and a mass of four units, their emission…

Q: 15. The concentration of 0.1 M NaOH in PPM is (a) 36,000 (b) 4000 (c) 400 (d) N/A a Od Ob с

A: The mass of solute present per million mass of the solution is known as part per million (ppm)…

Q: Sucrose or table sugar has the formula C12H22O11. What is the mass of 1.00 x 10²⁰ molecules of…

A:

Q: Part III. Structures of Organic Compounds Direction: Draw the condensed structural formula of the…

A:

Q: Determine if the following changes in condition would increase or decrease the rate of the chemical…

A: 'Since you have asked more than one question, we can solve only parts of one question. If you want…

Q: A 130.4 gram sample of an unknown substance (MM = 189.50 g/mol) is cooled from 233.0 °C to 147.6 °C.…

A:

Q: What is a cholesterol level of 1.85 g/L in the standard units o mg/dL?

A: •Given:- => Cholesterol level=> 1.85 g/L. •So to convert this into mg/dL we have to replace…

Q: he following text may be found at the ThermoFisher website: "PBS (phosphate buffered saline) is a…

A: Since the buffer solution is 1x concentrated it is not diluted.  Hence we have to use the…

Q: Vanillin, a compound used as a flavoring agent in food products, has the following percentage…

A: Given : Percentage composition of elements in vanillin  63.2% C , 5.29% H and 31.6% O   Empirical…

Q: a reaction AG=0 AH=0 AU=O ΔΙ 00 CAS=O q=0

A:

Q: his figure shows a group of water molecules. Mac H- H 0: H :0-H I ow many water molecules are in…

A: Covalent bond is formed by the sharing of electrons between the atoms to attain a stable noble gas…

Q: 12. What are the common units of reporting concentration in analytical chemistry. Include the…

A: Concentration : The concentration is the abundance of a constituent divided by the total…

Q: How many silicon atoms (Si) are contained in a 12.5 g sample of silicon? Molar Mass of Si = 28…

A:

Q: the theoretical final water temperature if 44.3 g of water at T=63.1C is mixed with 29.2 g of water…

A:

Q: 6. Shown below is the Fisher projection of (R)-2-bromo-(S)-3-chlorobutane. Draw the mirror image of…

A:

Q: Determine the lowest temperature (in °C) at which a certain reaction starts to beca spontaneous from…

A:

Q: 4. Provide a plausible mechanism for each of the following reactions: a. b. to AICI 3 OH H₂SO4 Y. 04…

A: Here we are required to provide the mechanism for the reaction

Q: 4.00 mol CO₂ is placed in a 6.00 L container at a temperature where 12.3% of it decomposes. What is…

A: Given -> Initial mole of CO2 = 4.00 mole  Volume= 6.00 L  Decomposed= 12.3 %

Q: Write the balanced nuclear reaction equations for the following. Write the mass number, atomic…

A: we have to write the balanced nuclear equation for the given reactions

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.