A solution is prepared by dissolving 50.4g sucrose
(C12H22O11) in 0.332kg of water.
The final volume of thesolution is 355 mL. Calculate the
concentration of the solution in each unit?
Molarity
Molality
Percent by mass
Mole fraction
mole percent.
A solution contains 1.694 g of cobalt sulphateCoSO4per litre.
Calculate: (1.5)a) the volume of 0.008640 M EDTA solution required
to titrate 25.0 mLof the cobalt solution. b) the volume of a
0.009450 M Zn solution required for titrating the excess of EDTA if
50.00 mL of the 0.008640 M EDTA solution had previously been added
to 25.00 mL of the initial solution. c) the volume of 0.008640 M
EDTA solution required to titrate Zn2+being displaced by Co2+after
the addition of...
Calculate the amount of solution (g or mL) that contains each of
the following amounts of solute.
5.2 g of LiNO3 from a 35 %(m/m) LiNO3 solution.
31.6 g of KOH from a 20.0 %(m/m) KOH solution.
3.1 mL of formic acid from a 18 %(v/v) formic acid solution.
Determine each of the following for a 0.130 M HBr solution:
a)Calculate the volume, in milliliters, of HBr solution required
to neutralize 46.0 mL of a 0.350 M LiOH solution .
Acetic acid has a Ka of 1.8×10−5.
b)What is the pH of a buffer solution containing 0.10 M HC2H3O2
(acetic acid) and 0.12 M C2H3O2−?
Calculate the volume, in milliliters, of a 0.216 M NaOH solution
that will completely neutralize each of the following: 1.) 3.71 mL
of a 1.32 M HNO3 solution. 2.) 8.10 mL of a 0.800 M H3PO4
solution.
A solution of sucrose is prepared by dissolving 0.5 g
in 100 g of water. Calculate: a. Percent weight in weight b. The
molal concentration of sucrose and water c. The mole fraction of
sucrose and water in the solution
Calculate the molarity of an HCl solution if a volume of 39.54
mL of this solution is required to titrate 0.2348 g Na2CO3.
(Bromocresol green is used as an indicator).
This HCl solution (calculated in question 1.) is then used to
analyze an unknown sample. Calculate the % Na2CO3 in the sample if
a volume of 23.44 mL of the HCl solution is required to titrate
0.4089 g of the sample
A concentrated solution of sucrose, C12H22O11, contains 233.2 g
dissolved in 397.07 g water. The density of the solution is 1.1507
g mL-1 Calculate; weight percent, mol fraction, molality, and
molarity of C12H22O11 in the solution
Calculate the vapor pressure of a 20 % by mass sucrose (MW=
342.30 g/mol) solution. The vapor pressure of pure water is 23.8
torr.
A) 23.50 torr B) 1.40 torr C) 23.8 torr D) 0.987 torr E) 4.44
torr