Describe the preparation of 300 mL of 1.00 M HNO3 from the
commercial reagent that is 70.5% HNO3 (w/w) and has a specific
gravity of 1.42.
Take _ mL of the concentrated reagent and dilute to _ mL with
water
A 100.0 ml sample of 1.00 M NaOH is mixed with 50.0 ml
of 1.00 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 22.9°C. After adding
the NaOH solution to the coffee cup and stirring the mixed
solutions with thermometer; that the specific heat of the mixed
solutions is 4.18 J/(g•°C), and that no heat is lost to the...
A student reacted 100.0 mL of 0.9800 M HCl with 100.0 mL of
0.9900 M NH3. The density of
the reaction mixture was 1.02 g/mL and the heat capacity was 4.016
J/g K.
Calculate the enthalpy of neutralization by plotting and using the
data shown below.
Time(min) Temp(oC)
0.0 23.25
0.5 23.27
1.0 23.28
1.5 23.30
2.0 23.30
3.0 23.35
4.0 23.44
4.5 23.47
mix ---------
5.5 28.75...
A solution of 100.0 mL of 1.00 M malonic acid (H2A) was titrated
with 1.00 M NaOH. K1 = 1.49 x 10-2, K2 = 2.03 x 10-6. What is the
pH after 50.00 mL of NaOH has been added?
A student added 50.0 mL of an NaOH solution to 100.0 mL of 0.300
M HCl. The solution was then treated with an excess of aqueous
chromium(III) nitrate, resulting in formation of 2.36 g of
precipitate. Determine the concentration of the solution.
Consider the titration of 100.0 mL of 0.100 M NaOH with
1.00 M HBr. Find the pH at the following volumes of acid
added.
Va = 0 mL
Va = 1.0 mL
Va = 5.0 mL
Va = 9.0 mL
Va = 9.9 mL
Va = 10.0 mL
Va = 10.1 mL
Va = 12.0 mL
Make a graph of pH versus Va = 0, 1.0, 5.0,
9.0, 9.9, 10.0, 10.1, and 12.0 mL.
How many mL of 12 M HCl will be needed to prepare 500 ml of 1.2
ppm HCl solution? What is the pH of this 1.2 ppm HCl solution?
Using the right significant figures. MW of HCl=36.5g/mol
I already found the first answer which is 1.4 x 10^-3
mL
How do I find the pH? I know the formula is -log [H+], but I
have no information for it?
Consider the titration of 100.0 mL of 0.400 M C5H5N by 0.200 M
HCl. (Kb for C5H5N = 1.7×10-9)
Part 1 Calculate the pH after 0.0 mL of HCl added.
pH =
Part 2 Calculate the pH after 35.0 mL of HCl added.
pH =
Part 3 Calculate the pH after 75.0 mL of HCl added.
pH =
Part 4 Calculate the pH at the equivalence point.
pH =
Part 5 Calculate the pH after 300.0 mL of HCl added....
Consider the titration of 100.0 mL of 0.400 M
C5H5N by 0.200 M HCl.
(Kb for C5H5N =
1.7×10-9)
Part 1
Calculate the pH after 0.0 mL of HCl added.
pH =
Part 2
Calculate the pH after 25.0 mL of HCl added.
pH =
Part 3
Calculate the pH after 75.0 mL of HCl added.
pH =
Part 4
Calculate the pH at the equivalence point.
pH =
Part 5
Calculate the pH after 300.0 mL of HCl added....