I could really use help for question 1 and 2! Thank you in advance :)
The answer is attach below
I could really use help for question 1 and 2! Thank you in advance :) MATERIALS...
Please help with the prelab questions! thank you!!!! Especially 2 and 3! Pre-Lab Questions 1. Calculate the theoretical equivalence point (the volume!) in terms of ml NaOH adde each of the titrations. Assume the concentration of acid is 0.81 M and the concentration of base is 0.51 M. 2. Which equation can be used to find the pH of a buffer? Calculate the pH of a buffer containing 0.20 M CH3COOH and 0.20 M CH3COONa. What is the pH after...
Please help, I'm so confused!!!! This is due wednesday night!!! i'm gonna fail :(((( pH of Buffer Solutions Procedure: Acetic Acid-Sodium Acetate Buffer (pKa acetic acid = 4.75) Weigh about 3.5 g of Na2C2H302 3H2O, record the exact mass, and add to a 250 ml beaker. Measure exactly 8.8 mL of 3.0 M acetic acid (use 10 mL grad cylinder) and add to the beaker containing the sodium acetate. • Measure exactly 55.6 mL of distilled water and add to...
I need to know if I calculated the acetate buffer correctly & how to calculate the change in pH when HCl is added... The following should be attached to this worksheet: 2 plots of volume vs. pH data. Data sheet stapled to back of DRA. 1. Calculate the pH of the acetate buffer. Show the calculation below. Calculation: Ho t t 419 [Cathoz ot pH= pkatlog HGH sos] Œ pH=4.745 + log NAH ** = 4.65 (0.2 m m 2....
Can you please draw a graph for this reaction? Thank you! 7. In exp 17 you have drawn pH vs. volume of NaOH (mL). Now draw a theoretical pH curves for the following reaction: (10 points) Sodium carbonate reacts with hydrochloric acid in two steps... Step 1 Na coz + HCI --> NaHCO3 + NaCl Step 2 NaHCO, + HCI —> NaCl + H2O + CO2 Overall Na,co, + 2HCI —> 2NaCl + HO + CO,
I really need help with filling out the data table for part two. I've completed the table for part one of the experiment. I really need help with filling out the data table for part two. I've completed the table for part one of the experiment. Procedure IMPORTANT SAFETY CONSIDERATIONS: Avoid getting NaOH on your skin. Should you come in contact with this chemical, immediately wash with water. Review all MSDS associated with this lab. Any broken or chipped glassware...
based on instructions please help me fill out chart Use appropriate safety precautions for working with concentrated acids and bases. This includes splash-proof goggles, long pants, and closed-toe shoes. No eating, drinking, or chewing at any time in the laboratory. Part I: Comparing the Behavior of the Buffer with Distilled Water 1. Obtain a pH meter or probe. Make sure beakers are clean and dry. 2. Place 25 mL of distilled, deionized water in a clean dry 100-ml beaker. 3....
check answers please thanks? vom voline SE 5: Buffers o n test effect of acid and bases on the carbonic acid/sodium bicarbonate buffer system. ere will test et ou will need: 4 small beakers balance IM NaOH pH paper baking soda glass stirring rod 100 ml beaker seltzer water graduated cylinder IMHCI Prepare 50 mL of a butter containing 0.1M NaHCO. in carbonic acid. Use a source NaHCO, and seltzer water as a source of carbonic acid How much NaHCO,...
Properties of Buffers Lab. I need help with problems 7 & 8. They’re pretty similar, but I’m confused on whether I’m doing them right. I need to calculate the moles of HCl and NaOH and then somehow insert them into the log fraction in the Henderson Hasselbach formula, is that right? Procedure (values are needed in procedure): Measured values during lab that I’ll be comparing #6/7/8 to: Questions I need help with: Part B Procedures: 1. Weigh about 3.5g of...
please help with my pre lab additional information Pre-Lab Questions: 1. What is the definition of an 'equivalence point' in an acid/base titration? (1 point) 2. In part one of the experiment, you will prepare the acid solutions being titrated from a stock solution. Describe how you will accurately prepare 10.00 mL of 0.100 M HCl solution using a 1.00 M HCI stock solution. In your response to this question, be very specific about the quantities of stock solution and...
I am needing help to solve this table. specifically the step 4 portion. My 2 compounds that I'm using for this experiment are 0.1 M NaHCO3 (acid) and 0.1 M Na2CO3. im having issues finding the concentration and pKa of everything. thank you! Step 1 hydrogen carbonate/carbonate (HCO3/003-) [NaHCO₃ and Nagco ₂] Initial Buffer: Pour 10 mL of the acid component of your buffer into a 50-ml beaker. Add 10 mL of the conjugate base of your buffer, and mix....