What is the total molarity of the original buffer
1 L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3. Adding 10mL of 2M sodium hydroxide solution to 100mL of this buffer causes the pH to rise to 4.78. What is the total molarity of the original buffer?
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A 0.650 g steel sample containing Mn was dissolved in acid anddiluted to 250 mL. A 50 mL aliquot was treated with KIO4 to oxidize Mn to MnO4- and diluted to100 mL.
For a maximum power heat engine operating with a cold temperature of 27 Celsius, what must be the hot temperature for 50% efficiency?
Check to see if the "odd looking" value should be retained,using the Q test and the 5 ppth test. Circle any normality datathat can be rejected. Calculate the mean, standard deviation andRSD, and report them in the table below with proper significa
1.25g sample of a benzoic acid with a heat capacity of 25.0kJ/gwas burned in a bomb calorimeter and the temperature of the calorimeter increased from 25.12 to 27.27 °C.
1 L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3. Adding 10mL of 2M sodium hydroxide solution to 100mL of this buffer causes the pH to rise to 4.78.
What volume of carbon dioxide, measured at STP, will beliberated (that means given off) when 300.08 grams of calciumcarbonate reacts with excess hydrochloric acid (The other productsare calcium chloride and water)?
A 95.0 gram piece of copper wire is heated to 89.2?C and thenplaced in a calorimeter containing water at 20.4?C. The finaltemperature of the water and copper wire is 23.0?C. The heat capacity of the calorimeter is 32.0 J/K.
How many grams of dipotassium oxalate (M.W.=166.22) should be addedto 20.671 mL of 0.7097 M HClO4 to provide a solutionwith a pH value of 5.6919 when the solution is diluted to 44.517mL?
A particular household ammonia solution (d = 0.97 g/mL) is6.8% NH3 by mass. How many milliliters of this solution should be diluted with water to produce 613 mL of a solution with pH = 11.56?
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