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A Brand X antacid tablet was analyzed by a student following the procedure used in this experiment. The student dissolved the tablet in 25.00 mL of a standardized HCL solution containing 1.627 x 10^-2 mol of HCL. The back-titration of the excess HCL required 7.83 mL of 1.035M NaOH solution.
(a) Calculate the molar concentration of the HCL solution that the student used.
(b) Calculate the number of moles of HCL neutralized by the antacid tablet.
a piece of paper is spotted with a solution containing a mixture of 2 components, A and B. the chemical affinity of A for the stationary phase is less than that of B, and the chemical affinity of A for the mobile phase is greater than a of B.
converted completely to FeNCS 2+ when the calibration curve was prepared, would this raise or lower the value of Keq? explain?
An aqueous solution containing 35.0% by mass of an unknown covalent compund in water was found to have a freezing point of -3.5 deg C. Calculate the molar mass of the unknown compund.
calculate the density and # of moles of a 10% Bromine Solution used in an experiment. Does the 10% refer to v/v or g/v in solution? I used 350 ul of the Bromine Solution
Acetylene gas (C2H2) is produced as a result of the reaction CaC2(s) + 2 H2O(l) → C2H2(g) + Ca(OH)2(aq).
The activity coefficients for acetic acid and the acetate ion are 1.000 and 0.775, respectively, in a solution with an ionic strength of 0.10 M.
A first order decomposition reaction is observed to have the following rate constants at the indicated temperatures. using an Arrhenious plot, find the activation energy
When heat is added to a solution of CoCl2 and HCl in water, what happens on the molecular level that causes the reaction to shift?
the molecular weight of sodium hydroxide is 40.00. how many grams would you need for 150 ml of a 1mm solution? a buffer
The flame in a torch used to cut metal is produced by burning acetylene (C2H2) in pure oxygen. Assuming the cumbustion of 1 mole of acetylene released 1251 kJ of energy
The vapor pressure of pure ethanol is 56 torr. if a solution prepared from 560.0 g of methanol and 210.0 g of ethanol has a vapor pressure of .31 atm over the soultion.
How can the molarity of chloride ion be calculated when 16 mL (2 mL intervals) of 12 M HCL is added to 5 mL of 0.4 M CO(NO3)2?
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