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Ascorbic acid (vitamin C, C6H8O6) is a diprotic acid (Ka1 = 8.00x10^-5 and Ka2 = 1.60x10^-12). What is the pH of a 0.280 M solution of ascorbic acid?
Lucas Test. For each compund, drae its structure and note the amount of tome it takes for the soultion to become cloudy
Co(H2O)62+(aq)+4Cl?(aq), which interconverts the blue CoCl42? ion and the pink Co(H2O)62+ ion. Will the equilibrium concentration of CoCl42? increase or decrease when the following changes occur?
The presence of a carboxyl band near 1640 cm-1 and two bands near 3000 cm-1 is good evidence of an alcohol B) The presence of a sharp, medium intensity band near 2720 cm-1 and a strong carbonyl band near 1700 cm-1 is good evidence of an alcohol
Using active extraction (changing the polarity) and gravity filtration to remove a component, describe how you would obtain pure naphthoic acid from this mixture.
How many moles are present of an ideal gas at the following conditions: 1.0 atm, 25.00C
What are the steps to recrystallize an impure solid? Answer 1. Heating the water. 2. Dissolving the solute.3. Letting the solute cool.4. Collecting and washing the crystals.
If 25.0 grams of potassium chlorate decomposes, how many grams of gas are released as a product?
what mass of ammonium chloride can be added to 100 grams of water at 20 degrees C before the solution becomes saturated
3H2 (g) + N2 (g) 2NH3(g), Kc = 6.0 × 10-2 at 500°C for this nitrogen fixation reaction. What is the equilibrium concentration of N2 If 0.250 M H2 and 0.050 M NH3 are present at equilibrium?
write the balanced chemical equation and corresponding equilibrium expression for the each step in the ionization of phosphoric acid ( apolyprotic acid ) in water?
Extract a solute from 100 mL of water using only 300 mL of ether. The partition coefficient between ether and water is 3.0. Calculate q, the fraction of solute that would remain in the water under each of the following extraction conditions
When steam (hot water) is passed over iron, hydrogen gas and iron (3) oxide are formed. What weight of steam would be needed to react completely with 100.0g of iron.
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