Question 5 of 7 What quantity in moles of NaOH need to be added to 200.0 mL of a 0.200 M solution of HF to make a buffer with a pH of 4.30? (Ka for HF is 6.8 x 104)

Q: In each row, pick the compound with the bigger lattice energy. Note: lattice energy is always…

A: Lattice energy is defined as the energy required to convert one mole of an ionic solid into its…

Q: A weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has what volume in L at -41.7 °C…

A:

Q: A car generates 5000 L of exhaust at 450. °C and 0.1 atm. How many mol of exhaust gas is this?…

A: Here we have to use the ideal gas equation.

Q: What is the wavelength (in nm) of blue light that has a frequency of 6.59 x 10¹4 s¹? (c = 3.00 x 108…

A: Frequency of blue light, f = 6.59 × 1014 s–1 Velocity of light, c = 3.00 × 108 m/s Wave length of…

Q: where does the formula at the start of step 5 come from?

A: The formula in step-5 comes from the conversion factor as shown below: From the previous steps, we…

Q: Silver tarnishes in the presence of hydrogen sulfide and oxygen because of the following reaction:…

A:

Q: Explain why free radical polymerisations are normally carried out either under nitrogen or under…

A:

Q: Which of the following transformations represent an increase in the entropy of the system. Choose…

A: Here, we have to find the transformation among the given transformations that will result in an…

Q: Give a clear handwritten answer with explanation....give the all possible resonance structures

A: The resonance structure of given compound can be given as:

Q: 4. Each of the following compounds can be prepared with an alkyl iodide and a suitable nucleophile.…

A:

Q: What is the molar concentration of NaCl in a 14.5 cm³ sample of pure NaCl? molar concentration = i M…

A:

Q: mol 93.4 X 32. L L 742.72 m 48.8 s 458.56 m 89.0 s = = = mol m 0²-2 S m 0-²-2 S Be sure each answer…

A:

Q: The pH of a 1.93 M solution of a weak base B is measured to be 10.87     Determine Kb of the base…

A:

Q: Can you help me with this? Thank you

A: Concept based on the preparation of standard solution whose concentration is exactly known. To make…

Q: 32.2 mg NaCl in 108.9 mLmL of solution         Express the molarity in moles per liter to three…

A:

Q: Calculate the amount of salt in a commercial cold-pack containing ammonium nitrate (ΔHsol = + 25.7…

A: Here we are required to find the mass of ammonium nitrate in cold pack which has enthalpy of…

Q: 2 Which of the following compounds exhibits primarily dipole - dipole intermolectar forces 9 .F2 Сог…

A: London forces: This intermolecular force exist in non-polar compounds.  Dipole-dipole forces: This…

Q: MISSED THIS? Read Section 16.8 (Pages 701-710); Watch KCV 16.8. WE 16.12 Consider the following…

A:

Q: What is the wavelength (in nm) of a photon if the energy is 7.17 x 10-¹9 J? (h= 6.626 X 10-34 J. s)

A:

Q: Question 8 of 26 Submit What is the wavelength (in nm) of a photon if the energy is 7.49 x 10-19 J?…

A:

Q: A student ran the following reaction in the laboratory at 431 K: PCI 5(9) PC13(g) + Cl₂(9) When she…

A: Given, the equilibrium reaction as follows, PCl5(g) ⇌ PCl5(g)+Cl2 (g) with initial amount of PCl5…

Q: A molecule with the molecular formula of C3H8O produces the IR spectrum shown below. Draw a…

A: In general for ethers, the C-H stretching vibration absorption bands are found in the 2800 to 3000…

Q: Decide whether each proposed multiplication or division of measurements is possible. If it is…

A:

Q: What is the cell potential of  Hg(l) | Hg2Cl2 | KCl(0.060 M) || KCl(0.040 M) | Cl2(0.50 bar) | Pt…

A: Here we are required to find the cell potential.

Q: Write the Ksp expression for the sparingly soluble compound lead hydroxide, Pb(OH)2. Ksp = If either…

A:

Q: How was x calculated, was quadratic or the 5% assumption used?

A: Here the value of "x" is calculated by using the quadratic equation which gives x = 0.0125 M

Q: Consider As and Br. Which would have a higher effective nuclear charge and why? O O Arsenic (As)…

A: Effective nuclear charge is the nucleus attraction on the valence electron. Which indicates that how…

Q: What is the rate reaction of D? The rate expression for the reaction is: rate = k [NO][0₂]. 2NO(g) +…

A: Rate expression is given by the slowest step.  Rate expression should not contain any intermediate…

Q: Let's use calorimetry to measure heats of reaction but this time let's have a limiting reactant.…

A: a.) Exothermic reaction is that in which heat is released and endothermic is that in which heat is…

Q: Write a balanced reaction equation including the states for the reaction between Al and (i) H+ (ii)…

A: Al is more reactive than hydrogen.  Hence Al(s) reacts with acids to form H2(g) and itself gets…

Q: an unknown has the formula C₆H₁₂O. The IR spectrum of this substance has a strong vibration near…

A:

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: Given, Aqueous hydrochloric acid (HCl) react with solid Sodium hydroxide (NaOH) to produce aqueous…

Q: Given the following information: acetylsalicylic acid (aspirin) hydrocyanic acid (2) At equilibrium…

A: HC9H7O4 ⇋ H++C9H7O4-  Ka= 3.0×10-4HCN ⇋H++CN-                   Ka= 4.0×10-10concentration = 0.536M.…

Q: How many g of Si3O5 are in 0.094 mol Si3O5?

A:

Q: 4. A closed gas system initially has volume and temperature of 4360mL and 646.0C with the pressure…

A: Since you have asked multiple question, as per our company guidelines we are supposed to answer…

Q: Write the Ksp expression for each of the following sparingly soluble compounds. If either the…

A:

Q: Predict the sign of the standard entropy change for each of the following: PC13(g) → PC13 (1) AS is…

A: For PCl3 (g) → PCl3 (l) Entropy decreases, so, the sign will be negative.   For 2 KCl (s) → 2K (s) +…

Q: In the laboratory you dissolve 21.6 g of copper(II) bromide in a volumetric flask and add water to a…

A:

Q: The solubility of Ag₂SO4 is measured and found to be 4.95 g/L. Use this information to calculate a…

A:

Q: NH3 1/2 N₂ + 3/2 H₂ the following data were obtained: [NH3], M seconds 6.96x10-3 0 3.48x10-3 1000…

A: Given that time [NH3] 0 6.96×10–3 1000 3.48 ×10–3 1500 1.74 ×10–3 1750…

Q: 7. A gas system has initial volume and temperature of 8160mL and 467.0K. If the temperature changes…

A:

Q: Select the correct name for the compound, including the correct (E) or (Z) designation where…

A:

Q: Gaseous ethane (CH3 CH3) reacts with gaseous oxygen gas (0₂) to produce gaseous carbon dioxide (CO₂)…

A:

Q: Oxygen-22 disintegrates into Fluorine with a decay rate of  λ = 0.315 per seconds. Considering an…

A: Given: The decay rate of Oxygen-22 = 0.315 per seconds We have to find the percentage of it will be…

Q: Find the pH of a solution with a hydroxide ion concentration of 0.025M.

A: hydroxide ion concentration (OH-) = 0.025M.

Q: Which of the following pairs co the same intermolecular forces NH₂ and CH4 H₂S and CH₂ сни H ₂0…

A: Intermolecular forces, often abbreviated to IMF, are the attractive and repulsive forces that arise…

Q: 2 NO(g) + O2(g) → 2 NO2(g) with AG A flask contains 0.650 atm NO(g), 1.10 atm O₂(g) and 1.50 atm NO₂…

A:

Q: Classify each chemical compound: compound AIP H₂SO3 N₂0 type of compound O ionic O ionic O ionic O…

A:

Q: In a particular experiment, it was found that when O₂(g) and CO(g) were mixed and allowed to react…

A: To find the concentration decrease , first we need to write relation between rate of decrease of…

Q: NaHS, KHCO3 and NaF NaHS, Cu(NO3)2 NaHS, KHCO3 NaF NaF, KHCO3

A: The substance when dissolved in water produces strong acid and weak base then the resulting solution…

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.