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In Activity 2, there were 2 mL of buffer per well. Calculate the final pH of the undiluted buffer after 0.25 mL of 0.1 M NaOH is added. The Ka of CH3COOH = 1.8 × 10-5. Use the CH3COOH buffer concentration calculated in Data Table 2, a balanced CH3COOH + NaOH reaction equation, an ICE table, and a balanced dissociation equilibrium equation to help determine the pH.
Determine which combination of these half-cell reactions leads to the cell reaction with the largest positive cell emf. and calculate the standard emf
Record any notable observations while the salt is heating. Describe the appearance of the salt after heating. What differences do you notice between heating this salt and the original three salts?
however, it takes more CaCl2 to form a White solid in one of the solutions than the other. Using the data from your experiment to help, explain what is happening when CaCl2 is reacted with the NaHCO3 (aq) or Na2CO3 (aq) solutions.
What mass of sodium cyanide must be added to 250ml of water in order to obtain a solution having a pH of 10.50? Ka(HCN) = 4.9 x 10 ^-10
Compute the theoretical amount (volume) of 3 M sodium hydroxide needed to convert 1.75 grams of benzoic acid to its water-soluble salt.
Compute the concentrations of all species in a 0.900 M sodium sulfite solution. If it is given that the ionization constants for H2SO3 are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
sodium acetate buffer before and after the addition of a) .0070 moles KOH and b) .0070 moles HBR a strong acid. Assume volume remains constant
The velocity of the chemical reaction doubles every 10 °C rise of temperature is raised by 50°C, the velocity of the reaction increases to about
Question- An ideal gas in a sealed container has an initial volume of 2.40 L. At constant pressure, it is cooled to 21.00 °C where its final volume is 1.75 L. What was the initial temperature
Propose a synthesis of trans-4-octene starting from 1-pentyne. Specify the reagents you would use to carry it out. If two or more routes to the same product are possible, show only one of them.
Using 1-Propanol as your only source of carbon, propose a synthetic route for 2-methyl-1,3-pentanediol.
use this data for the questions...-mass of tube mno2 21.5403g-mass of tube mno2 kclo3 kcl 22.5518g-constant mass
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