Determine the theoretical yield of HCl if 50.0 g of BCl3 and 50
g of H2O are reacted according to the following balanced reaction.
A possibly useful molar mass is BCl3 = 117.16 g/mol.
BCl3(g) + 3 H2O(l) → H3BO3(s) + 3
HCl(g)
A certain concentrated HCl solution has a density of 1.27 g/mL
and is 37.5% HCl by mass. What is the molarity of this concentrated
HCl solution? Show your calculations.
As phenothalin acid is titrated, the pink color forms where the
drops first enter the solution but disappears as the solution is
mixed. Explain why this happens.
If a pipet used to measure an unknown acid was not clean, and
some of the unknown acid remained above that left in the...
A.)
How much heat energy, in kilojoules, is required to convert 60.0 g
of ice at -18 degrees celcius to water at 25 degrees celcius?
B.) How long would it take for 1.50 mol of water at 100
degrees Celsius to be converted completely into steam if heat were
added at a constant rate of 24.0 J/s?
2 H2O (g) + 2 Cl2 (g) + heat ----------> 4 HCl (g) + O2 (g)
3. Which of the following is true about reaction when O2 (g) is
added to the mixture. a. Equilibrium will shift to the left. b.
Equilibrium will shift to the right. c. No effect on the
equilibrium. d. Equilibrium constant will decrease. 4. Which of the
following is true about reaction when the pressure is increased by
the addition of an inert gas? a....
Determine experimentally and theoretically how much zinc
iodide can be produced by reacting 2.00 g powdered zinc metal with
2.00 g of solid iodine.
Results: 1.81 g of zinc iodide was
collected
1. What was the purpose of the acetic acid?
2. Calculate (hint: which reactant element is
diatomic?):
a. Molar mass of zinc
(g/mol)=
b. Molar mass of iodine (g/mol)
=
c. Molar mass of zinc Iodide
=
3. Write the balanced reaction of zinc...
Y2(CO3)3(aq) + HCl(aq) -->
YCl3(aq) + CO2(g) + H2O(l)
HCl(aq) + NaOH --> NaCl(aq) + H2O(l)
Consider the UNBALANCED equations above. A 0.346 g sample of impure
yttrium carbonate was reacted with 50.0 mL of 0.0965 M HCl. The
excess HCl from the first reaction required 8.84 mL of 0.104 M NaOH
to neutralize it in the second reaction. What was the mass
percentage of yttrium carbonate in the sample?