find the pH of a 40 mL buffer solution + 1.0 mL of 6.0
M HCl (aq)
I know this question is pretty simple, but do I need
to know what the buffer is made of? Is it important? if not how
would I set up the ICE table? thank you!
A 66.0 mL sample of 1.0 M NaOH is mixed with 50.0 mL of 1.0 M
H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid
through which passes a calibrated thermometer. The temperature of
each solution before mixing is 23.7 °C. After adding the NaOH
solution to the coffee cup, the mixed solutions are stirred until
reaction is complete. Assume that the density of the mixed
solutions is 1.0 g/mL, that the specific heat of...
Consider a mixture of 50.0 mL of 0.100 M HCl and 50.0 mL of
0.100 M acetic acid. Acetic acid has a Ka of 1.8 x 10-5.
a. Calculate the pH of both solutions before mixing.
b. Construct an ICE table representative of this mixture.
c. Determine the approximate pH of the solution.
d. Determine the percent ionization of the acetic acid in this
mixture
When 50.0 mL of 0.45 M HCl was added to 50.0 mL of 0.65 M NaOH,
the temperature change was 5.8 *C. Calculate the heat change for
the reaction (Qsoln) and the heat of neutralization
(ChangeHneut), and the state whether the reaction is
exothermic or endothermic.
When 50.0 mL of 0.45 M HCl was added to 50.0 mL of 0.65 M NaOH,
the temperature change was 5.8 *C. Calculate the heat change for
the reaction (Qsoln) and the heat of neutralization
(ChangeHneut), and the state whether the reaction is
exothermic or endothermic.
1a )When 50.0 mL of 0.500 M HCl at 25.0°C is added to 50.0 mL of
0.500 M NaOH at 25.0°C in a coffee cup calorimeter, the temperature
of the mixture rises to 28.2°C. What is the enthalpy of reaction
per mole of acid? Assume the mixture has a specific heat capacity
of 4.18 J/(g ? K) and that the densities of the reactant solutions
are both 1.00 g/mL.
1b) Consider the following reaction: 2 PbS (s) + 3 O2...
a. 0.130 g of HCl is in 35.0 mL of water. This is mixed with
50.0 mL of 0.185 M Sr(OH)2. What is the pH of the
resulting solution?
b. Calculate the pH of a solution prepared by mixing 125.0 mL of
0.0120 M HCl with 25.0 mL of 0.0420 M Ba(OH)2?
c.
adding 50.0 mL of 1.0 x 10^-3 M Sr(NO3)2 and 50.0 mL of 1.0 x
10^-3 M Na2CO3wpuld produce how many grams of SrCO3 precipitate?
ksp of SrCO3 = 1.1 x 10^-10
20 mL of 4.0 M acetone + 10 mL of 1.0 M HCl + 20 mL of 0.0050 M
I2
If the reaction is zero order in
I2, approximately how long would it take for the
I2 color to disappear at the temperature of the reaction
mixture 20 mL of 4.0M acetone + 10 mL of 1.0 M HCl + 10 mL 0f
0.0050M I2 + 10 mL H2O .
What is the pH made by combining 50.0 mL of 0.12 M HCN, 50.0 mL
of 0.15 M NaCN and 2.0 mol NaOH? Ka of HCN = 4.9 x 10^{-10} Assume
the NaOH addition does not change the buffer volume.