How will you prepare 250 mL of 0.01 M NaOH from NaOH pellets?
Please describe in...
How will you prepare 250 mL of 0.01 M NaOH from NaOH pellets?
Please describe in detail how to properly handle,
weight, and dissolve the NaOH pellets, and how you would store the
solution
Weigh by difference the amount needed to prepare 250 mL of a
0.01 M KIO3 solution and quantitatively transfer to a volumetric
flask with the aid of a glass funnel. Record its mass to the
nearest ±0.1 mg.
250. mL of 0.600 M HCl is mixed with 250. mL of 0.600 M NaOH ,
resulting in a neutralization reaction with net ionic equation:
H+ (aq) + OH- (aq) → H2O(ℓ) ∆Hrxn = -57.0 kJ
Assume the solutions have specific heat capacity of 4.18 J/g C ,
and the solutions have a density of 1.00 g/mL.
The reaction takes place in a coffee-cup calorimeter, and all
heat transfer occurs within the confines of the calorimeter.
If the initial temperature...
A)how would you prepare 250 ml of a 0,150 m solution of CoCl2
from solid CoCl2 and distilled water?
b)using the solution from part a and ditilled water,how would
you prepare 100 ml of a 0.0600m solution of CoCl2?
c)What absorbance would you expect from the solution from part b
at the wavelength of maximum sensitivity?
How would you prepare 1.56L of a 0.120 M NaOH solution from a
1.20 M
NaOH solution?
A flask contains 55.0 mL of a hydrochloric acid solution. The
molarity of the solution is not known. It
takes 23.5 mL of a 0.103 M sodium hydroxide solution to complete
the reaction with hydrochloric acid. What is the molarity of the
hydrochloric acid solution?
You prepare a diluted NaOH solution by adding 15 mL of 3 M NaOH
to 435 mL of distilled water and stir for several minutes. In a
clean dry beaker you obtain about 75 mL of standardized HCl and
record the molarity. You take two burets, rinse one with the
standardized HCl and one with the diluted NaOH solution. Fill one
buret with the HCl and the other with NaOH.
Prior to the titration the standard HCl soltion (~15.00 mL)...
Describe how to make a 600. mL of 0.200 M NaOH from the stock
solution of 2.00 M NAOH solution.
Describe the proper technique/procedure for filling a buret.
Explain why this procedure is necessary.
A buffer is prepared by adding 150 mL of 1.0 M NaOH to 250 mL of
1.0 M NaH2PO4. How many moles of HCl must be
added to this buffer solution to change the pH by 0.25 units?
Assume the total volume remains unchanged at 400 mL.
For H2PO4-, Ka = 6.3 ×
10-8.
how
manu mL of 5.00 M NaOH solution are needed to prepare 750mL of a
0.150 M NaOH solution? and how many mL of water misy be added to
prepare the above solution?
How would you prepare 250.0 mL of 0.00200 m Na2S2O3? Describe
what you would do in the lab. Include amounts and types of
glassware and equipment that you would use. (*the "0.00200 m" is
what is shown in our books, I'm not sure if it is a typo for
Molarity instead of Molality.*)