What is the pH of a 0.50 M weak acid solution. The pKa of the weak acid is 11.5. Report 2 significant figures

Q: 1-chlorobutane plus the following yields __________. 1) cyanide; 2) H3O+, heat; 3) SOCl2; 4) ethanol…

A:

Q: Given the following chemical reaction: Al + HCl ---> AlCl3 + H2(g) If you measured the partial…

A: Temperature = 45 0CPartial volume of hydrogen gas = 728 mLTotal pressure = 845 torrConcentration of…

Q: Calculate E°cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous.…

A:

Q: What is the pH of a solution having hydrogen ion concentration, H+ (aq) of 0.05mole/litre?

A:

Q: Calculate the % ionization of a 0.162 M solution of weak monoprotic acid, HA, whose acid ionization…

A:

Q: A 30.00 mL of 0.125 M NaOH solution is titrated with a standard 0.250 M HCL solution. Calculate the…

A: Here both given acids and base are strong . So M1V1 = M2V2

Q: . A commercial window-cleaning liquid has a pH of 11.7. What is the hydroxide ion concentra the…

A: pH + pOH = 14 pOH = - log[OH-] pH > 7 , solution is basic pH < 7 , solution is acidicpH = 7 ,…

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A: The empirical formula is the simplest formula for a compound which has subscripts of the smallest…

Q: A sample of Fe weighs 37.2 grams. Will a sample of S that contains the same number of atoms weigh…

A: Weight of Fe sample = 37.2g Atomic mass of Fe = Atomic mass of S = Avogadro's Number =

Q: In the synthesis of methyl isobutyl ether by the Williamson ether synthesis, the nucleophile will be…

A: Williamson ether synthesis involves in the preparation of ethers by the reaction of alkyl halide…

Q: MISSED THIS? Read Section 12.5. You can click on the Review link to access the section in your…

A: According to Arrhenius, we can relate the rate constants as following:k = Aexp(-Ea/RT)Where:k = rate…

Q: Polymers may be composed of thousands of monomers. Draw two repeat units of fluoroethene. Assume…

A: Alkene undergo polymerization in presence of heat or light or AIBN through a free radical mechanism.…

Q: Calculate the pressure exerted in atm by 3.0 moles of ammonia when it is behaving as (a) a perfect…

A: Using Ideal gas equation are :---PV =nRTP is the pressure.V is the volume.n is the number of moles.R…

Q: Be sure to answer all parts. Calculate the molality of each of the following aqueous solutions. (a)…

A:

Q: An aqueous solution containing 0.250 mole of a compound (which is a strong electrolyte) in 500 g of…

A: According to Raoult's law for an ideal solution, the freezing point depression  of a solution is…

Q: Give detailed Solution..give correct answer please

A: Compare the solubility of lead fluoride in the given solution.

Q: 7. Which compound would produce the 'H NMR spectrum below? 3 Br ہو میڈ ہو میگم 2 PPM B. D. Br عله Br…

A: 1H-nmr spectra provides the information of hydrogen environment of unknown compound based on the…

Q: Which of the following two compounds shown is/are an amide? H N. OA) What's an amide? C) #2 "NH₂ B)…

A:

Q: Calculate the wavelength of a proton moving at 23% of the speed of light. Leave your answer in m-…

A: De-Broglie relationship:h is planck's constant=6.626 x 10-34J.sm is mass.v is velocity.λ is…

Q: How many moles of NH3 can be produced from 5.52 moles of nitrogen in the following reaction: N₂ (g)…

A: The balanced equation is N2 (g) + 3 H2 ---> 2 NH3 (g)Number of moles of Nitrogen = 5.52 mol

Q: The enzyme chymotrypsin catalyzes the hydrolysis of a peptide containing phenylalanine. Using the…

A: For the given data of enzyme catalysis of a peptide containing phenylalanine, we have to find the…

Q: Deduce the major organic product from the following reactions. Be able to draw mechanisms for…

A: In the first reaction at first presence of acid, protonation occurs at the double bond and form 3° ,…

Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are…

A:

Q: What is the pH of 0.0073 M NaOH?

A: Concentration of NaOH solution = [NaOH] = 0.0073 MpH of the solution = ?Note: NaOH is a strong base…

Q: A chemist prepares a solution of barium chloride (BaCl₂) by measuring out 18. g of barium chloride…

A: Molarity (M) of a solution is defined as the number of moles of solute present in the 1.0 liter of…

Q: - Considering the reaction; C3Hs + 5023CO2 + 4H₂O what is the total mass, in grams, of all products…

A:

Q: 5.3 Draw the mirror image of each compound. Label each molecule as chiral or achiral. H Br CH3 CH3…

A: we have to draw the mirror image and find the molecule is chiral or achiral.A molecule or ion is…

Q: Calculate the solubility in mol/L and g/L of Zn(OH)2 at 25°C if the solution is buffered at the…

A: Ksp for Zn(OH)2 = 3.0 × 10–17Given, pH = 10.28  pOH = 14 – pH = 14 – 10.28 = 3.72  [OH-] = 10–3.72…

Q: 3. What is the structure of a molecule with that has an integration of 6H, 2H, 1H, and 1H? A)…

A: Integration of molecule is 6H, 2H ,1H and 1H.

Q: For any given solution, which colligative property tends to have the most impressive effects?…

A: Colligative properties are those which depends on the number of solute particles in a solution for…

Q: Determine the mass of  benzene (C6H6) combusted, if 450 mL of water is heated from 20.0C to   31.0C…

A: Given,Mass of Benzene =?Volume of Water = 450 mLT2 = 31 oC and T1 = 20 oCChange in Temperature

Q: 1. Name uring IUPAC rules: рас A. B use Ris B. t

A: Two questions based on nomenclature of organic compounds. One compound is cyclic and the other one…

Q: A total of how many signals are expected in the ¹H spectrum of the given compound?

A: -> In 1HNMR spectrum number of signal is equal to total number of non equivalent hydrogen present…

Q: For a first order decay of [A], if 492 mg remains of an initial sample of 1.3089 g after 490 min,…

A: To find the half-life of the decay, we can use the first-order decay equation:Nt = N₀ × e…

Q: Classify each of these chemical compounds: compound HCH,CO, CaSO4 Se H4 type of compound (check all…

A: For this problem we first nedd to define the type of compounds as molecular, ionic, organic,…

Q: Determine the pH of a buffer solution by constructing an ICE table, writing the equilibrium constant…

A: pH is defined as the negative logarithm of the hydrogen ion concentration. The expression can be…

Q: 4. A 0.584gram sample of a fertilizer was analyzed for its N content by the kjeldahl method, the…

A: analysis of % N and Urea, H2NCONH2

Q: Determine the pH of a 0.24M solution of an acid having a dissociation constant of 7.2x10-8

A: The dissociation constant (Ka) is a measure of the extent to which an acid dissociates…

Q: What is the correct IUPAC name for the compound shown here?

A:

Q: Pleassseeeeeeee explainnnnnnn

A: Number of moles is given by:Molarity is given by:

Q: What is the name of the compound with the formula N₂O4? What is the name of the compound with the…

A:

Q: Rank the elements or compounds in the table below in decreasing order of their boiling points. That…

A: Need to focus on what kind of intermolecular attraction between the molecules present in the…

Q: A Vitamin C packet is added to a glass of water containing 270.0 mL of solution. The Vitamin C…

A: Volume of solution = 270.0 ml Weight of vitamin C = 1000.0 mg = 1 gm (1 gm = 1000 mg) Density of…

Q: Which of the given compounds, all with molecular formula C₂H₁20, is consistent with the 1H NMR 13C…

A: Now here you can see a peak around 5 ppm is D2O exchangeable so it must be a proton attached with O…

Q: A student weighs 1.966 g of NaHCO3. She then heats it in a test tube until the reaction is complete.…

A: It is based on the concept of stoichiometry.Stoichiometric reactions are reactions where a…

Q: Be sure to answer all Calculate the change in total internal energy for a system that releases 2.16…

A: According to the first law of thermodynamics, the energy of the universe remains constant. For a…

Q: 4. How many grams of AlBr3 are formed from the reaction of 4.8 g of aluminum with 24 g of bromine.…

A: Mass of Al = 4.8 g Mass of Br2 = 24 g Molar mass of Al = 27 g/mol Molar mass of Br = 80 g/mol Mass…

Q: Write the full electron configuration for S²-. full electron configuration: What is the atomic…

A:

Q: Draw the major product of this reaction. Ignore inorganic byproducts. N 1. CH3MgBr 2. H3O+

A:

Q: Which of the following change the value of Q, and which change the value of K? Adding reactants…

A: Equilibrium is a condition at which the rate of forward and reverse reaction is exactly the same. At…

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.