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What amino acid would provide a suitable buffer at pH 7.0 when made up with NaOH and why? How many grams of this amino acid and what volume of the 0.1 mol/L NaOH would you mix to make 500 mL of a 0.01 mol/L solution of this buffer? (HINT: Having mixed the amino acid and the NaOH, you are expected to dilute to a final volume of 500 mL with distilled water.
A litre of solution containing 0.1 M of CH3COOH and 0.1 M of CH3COONa provides a buffer of pH 4.74 . calculate the pH of a solution after the addition of 0.02 M of NaOH .
A sample of a gas at 0.91 atm occupies a volume of 374 mL. If the temperature remains constant, what will be the new pressure if the volume increases to 265 mL?
What mass of NaOH could this buffer neutralize before the pH rises above 4?
A colorless liquid A (C3H6O) was soluble in water and ether, and had a boiling point of 94-96 degrees Celsius. It decolorized a Br2-CH2Cl2 solution and gave a positive ceric nitrate test
The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is canceled by the symmetric tetrahedral shape. When other atoms substitute for some of the Cl atoms
how many grams of methane must be combusted to heat 1.20g of water from 23.0c to 93.0c assuming as a product and 100
How many milliliters of 1.00 M KOH should be added to 100 mL of solution containing 10.0 g of histidine hydrochloride (His HCl, FM 191.62) to get a pH of 9.30?
Use the ksp values to calculate the molar solubility of each of the following compounds in pure water BaSO4(ksp=1.07x10^-10) PbCl2(ksp=1.17x10^-5) Ni(0H)2(ksp)5.48x10^-16
Electrons are ejected from sodium metal by any light that has a wavelength shorter than 544 nm. What is the kinetic energy of an electron
a patients blood work showed hco3- 32 meql and pco2 42 mmhg. what is the patients blood ph? what condition does the
In an experiment, 0.30 mol H2 and 0.30 mol I2 are mixed into a 1.00-l container, and the reaction forms HI. If Kc =49. for this reaction, what is the equalibrium concentration of HI. I2(g) + H2(g) 2HI(g)
What is the pressure of a 10g sample of sulfur trioxide in atmospheres at a temperature of 20 degrees Celsius that has a volume of 50L
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