Calculate the Ka before adding the titrant (NaOH). Titration experiment between NaOH and H3PO4. Before adding the NaOH, the pH of the 10.00mL 0.15M H3PO4 and 20.0 mL DI water solution was 1.75. I'm stuck on how to calculate the Ka.
31. The organic base piperidine is found in small amounts in black pepper. What is the pH of 315 mL of a water solution containing 114 mg of piperidine? C5H1N + H,0 = C5HNH+ + OH- K, = 1.6 x 10-3
What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 35.00 mL of 12 M NH3 in enough water to make 1.000 L of solution? Kb = 1.80 × 10-5 for NH3. 9.26 9.58 8.93 11.69
Juichlorobutane bp 117-119°C CH=CH-CH2 -CH=CH2 + 2 Br2 - CH ---CH-CH2-CH-CH, Br Br Br Br 1.4-pentadiene 1.2.4.5-tetrabromopentane bp 26.0°C mp 85-86°C Usually the halogen is dissolved in some inert solvent such as tri- or tetrachloro- methane, and then this solution is added dropwise to the alkene. Reaction is nearly instantaneous, even at room temperature or below. No light or heat...
Balance the equation, then determine what volume of a 12M HCl solution is required to produce 3L of H2 (8) at STP if you began with óg of Mg- Mg(s) + HCI-H2(g) + MgCl2 (aq)
I don't understand how to use equation three to figure out the composition of a penny's zinc % and copper % using the data I collected. Can someone show me how to do it? Trial 2 Data Table 4: The Penny Number of pennies Total mass of pennies (g) Initial volume of water (mL) Final volume of water (mL) Volume...
Question 2 (10 points) If 25.0 mL of 0.451 M NaOH solution is titrated with 0.253 MH2SO4, the flask at the endpoint will contain (besides the indicator phenolphthalein) as the principal components: sodium hydroxide, sulfuric acid, and water dissolved sodium sulfate and water sodium hydroxide, sodium sulfate, and water dissolved sodium sulfate, sulfuric acid, and water precipitated sodium sulfate and...
Calculate the ratio of [NH3]/[NH4+] concentrations that gives(This problem requires values in your textbook's specific appendices, which you can access through the OWL v2 MindTap Reader. You should not use the OWL v2 References' Tables to answer this question as the values will not match.) a. solutions of pH = 9.61b. solutions of pH = 9.29
Use the equipartition theorem to determine the value of êv for a mixture containing half water and half ammonia vapor by mole at 300 K. You may neglect electronic and nuclear storage effects. Use the equipartition theorem to determine the value of êv for a mixture containing half water and half ammonia vapor by mole at 300 K. You may...
Using a 0.20 M phosphate buffer with a pH of 7.0, you add 0.73 mL of 0.49 M HCl to 45 mL of the buffer. What is the new pH of the solution? (Enter your answer to three significant figures.) 4.9 6.63 x Using a 0.20 M phosphate buffer with a pH of 7.0, you add 0.73 mL of 0.49...