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Question- Calculate the relative amounts of H2PO4- and HPO4(2-) that should be combined to produce a phosphate buffer at pH7. (pKa= 6.86 and molarity= 0.1 M)
I am need of complete solution for this problem please help- me out to get right solution
what is the theoretical yieldwhat is the theoretical yield of sodium thiosulfate pentahydrate when 3.25 g of sulfur is
n2go2glt-gt2nog kc 1.7x10-3calculate the equilibrium concentrations if the initial concentrations are 2.31 m n2 and
What was the concentration (mol/L) of the permanganate solution. Submit answers correct to two decimal places.
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-)+Fe(2+)---> Fe(3+)+Mn(2+) in acidic solution. What is the ration Fe(2+):MnO4(-) in the balanced equation
a zero-order reaction has a constant rate of 2.50times10-4 . if after 35.0 seconds the concentration has dropped to
A buffer is prepared by adding 1.50X 10^2 ml of 0.250 M NaOH to 2.50X10^2 ml of 0.350 M weak acid, HB. The solution is diluted to 1.00 L. If the pH of the resulting solution is 6.55, what is the pKa of the weak acid
a student wants to dissolve the maximum amount of caf2 ksp 3.2 10-11 to make 1 liter of aqueous solution. a into
Compute the equilibrium concentration of La3+ in the resulting solution. Ignore activity coefficients. Ksp = 1.0 x 10-11 use the below equation to find the net ionic equation. KIO3(aq) + La(NO3)3(aq) ---> La(IO3)3(s) + KNO3(aq)
The heat of fusion for thallium is 21 j/g, and its heat of vaporization is 795 j/g. Thallium's melting point is 304 C, and its boiling point is 1457 C. The specific heat of liquid thallium is 0.13 j/g C. How much heat is needed to change 236 g of ..
60.0 mL of a 0.450 M HNO_3 solution is titrated with 0.570 M KOH. Calculate the volume of KOH required to reach the equivalence point.
About 70 million tons of paper are used per year in the U.S. If the U.S. population is 301.6 million people, how many kilograms of paper are used by the average citizen
A piece of iodine is added to a dilute potassium hydroxide solution in a disproportination reaction. Write the unbalanced net ionic equation
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