What ratio of NaCN to HCN is needed to prepare a pH 9.80 buffer? (Ka of HCN is 4.9 × 10⁻¹⁰)

Q: Which of these statements is true? As wavelength increases frequency decreases. II. As energy increa...

A: The wavelength and frequency relation is described below  Wavelength = speed of light / frequency He...

Q: Which one of the following alkyl groups is the ethyl group? CH3 CH3- CH3CH,- CH3CH,CH,- CH3-C- CH3 C...

A: In this question, we have to choose the option which is ethyl group.

Q: what do we call a substance that is used to reveal whether a chemical is an acid or a base?

A: Substance that is used to reveal whether a chemical is an acid or a base

Q: (1) Isopropyl alcohol and 1-propanol are two names for the same compound. (2) Ether molecules cannot...

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Q: A 2 +2B rightleftharpoons2AB An increase in the concentration of A_{2} will do which of the followin...

A: According to Le Chatelier's Principle : if a system at equilibrium is disturbed, the equilibrium mov...

Q: Element Molar Mass (/ 14.01 16.00 24.31 32.07 55.85 1. The molar mass of sulfur is 32.07 s/mol. This...

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Q: 25.00 mL of a 1.000 x 10-1 M solution of HClO4 is titrated with a 1.052 x 10-1 M solution of NH3. 1)...

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

Q: Indicate the atom in the molecule below with the highest electron density. [Image description: The c...

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Q: 7. a) A solution was prepared by dissolving 0.02 moles ethanoic acid in water to give 1 L of solutio...

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Q: 1) Circle all asymmetric atoms in the following structures, and assign their absolute configurations...

A: Assymetric atoms or assymetric carbon atoms are those carbon which is attached to 4 different groups...

Q: The premise of the experiment you will be performing is that you can measure the solubility of a sal...

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

Q: In one experiment, a 34.9 ml sample of 0.188 M phosphoric acid was titrated with a 0.22 M solution o...

A:

Q: Indicate the products of the reaction of 2-hexanone with aqueous I2/NaOH and with subsequent hydroly...

A: The ketone having alpha- methyl group reacts with I2 and NaOH followed by little acidic workup to pr...

Q: What is wrong with the Lewis structure depicted below? [Image description: A Lewis structure with a ...

A: The Lewis structure given is,  

Q: What volume in L of a 0.724 M Nal solution contains 0.405 mol of Nal ?

A: Given, Molarity of NaI solution = 0.724 M = 0.724 mol/L moles of NaI in the solution = 0.405 mol Vol...

Q: Identify why a weak base-strong acid titration has an equivalence point pH below 7. O The strong aci...

A: At  equivalence point the pH of weak base and strong acid is below 7.  

Q: combustion of methane is represented by the equation: CH4 + 2O2 → CO2 + 2H2O

A: Given :-  combustion of methane :  CH4 + 2O2 ---> CO2 + 2H2O  To determine :-  Oxidized compound...

Q: Supply missing reagents and prodacts in the following reaction schene. Ne mechani ple and disregond ...

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Q: Q2. Consider eating a meal providing a total of 1,815 kilocalories, and containing 190 g carbohydrat...

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Q: The following thermochemical equation is for the reaction of Fe3O4(s) with hydrogen(g) to form iron(...

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Q: Please research the following and reference your sources: 1. The environmental impact of disposing o...

A: Question 1 - - > Environmental impact of disposing of plastics -  Long-term use of plastics and p...

Q: What element is produced by the beta decay of the isotope below? 197 79 Au a) Hg b) Pt c) Au 197 197...

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Q: Question 1 Which of the following statements is true of a 2.5 x 10 M HCl solution? Select all that a...

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Q: Calculate the concentration of sodium jons in solution after 30.0 mL of 3.35 M NaCI and 70.0 mL of 1...

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Q: Using the molecular models to explain the answer, determine if 2-chlorobut-1-ene is polar or non-pol...

A: The molecule is 2-chlorobut-1-ene. It has one Cl-group ,one double bond and 4 C.  

Q: Compare acetanilide, which was in the recrystallization lab and acetaminophen (2) shown below. Which...

A: Comparison of Rf values between acetanilide and Acetaminophen 

Q: Which of the following statements is NOT TRUE based on the concept of colligative property? ...

A: In this question, Which of the following given statements is NOT TRUE based on the concept of collig...

Q: What series of reagents could be used to carry out the conversion shown? ČI O Cl/FeCls; CH3CI/AIC|3;...

A: Aromatic electrophilic substitution reactions are the characteristic feature of benzene and other ar...

Q: Given the balanced equation: 2 LİOH + CO, 2 Li¿CO; + H,O, how much H;O will be produced if 25.4 g LI...

A: Given :-  2LiOH + CO2 →Li2CO3 + H2O  mass of LiOH = 25.4 g  mass of CO2 = 64.8 g  To calculate :-  m...

Q: After an afternoon party, a small cooler full of ice is dumped onto the hot ground and melts. If the...

A: Given,  Mass of ice     =  9.20kg Heat of fusion of water = 80cal/gm

Q: Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropria...

A: Barium format is formed from the strong base barium hydroxide and weak acid formic acid. The formati...

Q: 8. A gas composed of methane and ethane has a specific gravity of (0.75). What is the weight percent...

A: The mass density of an ideal gas is related to the molar mass, pressure, and temperature of the gas....

Q: An aqueous solution contains 0.30 M ammonlum bromide. One liter of this solution could be converted ...

A:

Q: If corn oil is used to make soap, what is the formula of the most abundant soap formed?

A: Corn oil has high amount of unsaturated fatty acids such as myristic,palmic, stearic and linoleic fa...

Q: What is the formula for ammonium chloride?

A: Ammonium is NH4+ Chloride is Cl-

Q: Real-life heat Capacity is temperature dependent. Consider the formation of water vapor H2(g)+( 02(g...

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Q: a. Pb2* ion Probable Observation Treatment After heating After adding K2CrO4 b. Ag* ion Treatment Af...

A:

Q: can be m metnyi as snov the reaction below. CH3CI (g) + 3 Cl2 (g) -> CCI4 (g) +3 HCI (g) In the firs...

A: Given-> CH3Cl(g) +3Cl2 (g) -->CCl4(g) + 3HCl Initial concentration of Cl2 =0.303 M Final conce...

Q: C-CH-CH--a,

A: The IUPAC name is same for any compound all over the world.  There are different suffix for differen...

Q: I am having trouble finding the delta S rxn of ammonium chloride. I am using stand thermodynamic val...

A: To give: The standard entropy values of NH4Cl (s), H2O and NH4OH to calculate the ΔSrxn.    

Q: why very low concentrations? are ionic solutions not ideal even at

A: An ideal solution is one which obeys Rault's law at any temperature and concentration. Here we have ...

Q: H)3 + H(NO3)

A: There is not proper information for the above ques.

Q: A solution is prepared by dissolving 0.400 g of an unknown monoprotic acid in 50.0 mL of solution. ...

A:

Q: 7. Explain why Mg-EDTA complex is added to the titration mixture in the determination of calcium wit...

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Q: (a) Give the name of the following metal complexes based on the latest IUPAC nomenclature. 0 (Co(en)...

A: (a) here, as a ligand two ethylene diamine ,two bromide are present. And as an anionic part nitrate ...

Q: A student determined that the mass of four pennies was 8.7 grams. Use this information to calculate ...

A: Given :-  No. of pennies in 8.7 g = 4  To calculate :-  No.of pennies in 2.5 pounds   

Q: Q3 a) Without any calculation state if then poly(methylacrylate) is soluble in methylacrylate. Why? ...

A: GIVEN:- a) Without any calculation state if then poly(methylacrylate) is soluble in methylacrylate. ...

Q: pls.ans.wer... ASAP. I really need help. you dont have to show all the steps but just

A: Select the pair of products formed in the electrolysis of a neutral solution of ZrCl4 (aq) using ine...

Q: The equilibrium constant for the reaction below is K=3.39×105 at 400.0ºC. 2 SO₂ (g) + O₂ (g) ⇄ 2 SO...

A: Use the van't Hoff equation to calculate the value of the equilibrium constant.,

Q: A solution of dimethylamine is prepared by dissolving 1.3525 grams of dimethylamine in 25 mL ethanol...

A: Given: Mass of dimethylamine = 1.3525 g. And the final volume of the solution = 100.0 mL.  

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.