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1. What is the ph of a solution that results from adding 250 ml of .50 m naoh to 750 ml of .50 m hf?
2. What is the ph of a buffer composed of .035 m h2po4 and .65 m hpo4?
3. A buffer is prepared by combining 150 ml of .50 m naoh
And 250 ml of a .75 m weak acid HA. If the ph of the buffer is 5.50 what is the ka of the acid?
4. Molecules or ions that can alternitively behave as either bronsted Lowry acid or base are called?
The temperature in the laboratory was 23°C and the barometric pressure was 621. mm Hg. You will need to look up vapor pressure of water at that temperature. Find the equivalent mass of this metal.
What is the reaction order with respect to chloroform? What is the reaction order with respect to chlorine.
A solution has a volume of 2.0 L and contains 36.0 g of glucose. If the molar mass of glucose is 180 g/mol, what is the molarity of the solution
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL
Given Ksp {Fe(OH)2}= 1.6x10-14 and Kb(NH3)=1.8X10-5. What concentration of ammonia is necessary to start to precipitate ferrous hydroxide {Fe(OH)2} from a solution of 0.0030M FeCl2
If, when you are extracting an aqueous solution with an organic solvent, you are uncertain as to which layer in the separatory funnel is aqueous, how could you quickly settle the issue?
If 500 g of KCIO3, decomposes and produces 303 g of KCl, how many grams of O2 are produced?
If the total mass of H2O produced is 22.0 grams, what was the approximate mass of the methane in the original mixture?
Methanol (CH3OH) is produced commercially by the catalyzed reaction of carbon monoxide and hydrogen: CO(g) + 2H2 (g) (equilibrium) CH3OH(g).
acid catalyzed hydrolysis of esters is usually better than base catalyzed hydrolysis. True or False.............2. Borane selectively reduces a carboxylic acid while it leaves an ester alone.
Describe how you would prepare 500mL of a single solution containing 250mM Tris, 50mM glucose, and 5mM NaCl.
Determine the boiling point of a solution of 22.5 g of fructose, C6H12O6 , in 294 g of phenol.
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