Homework Answers
Answer 1
Option second 3.70 is correct.
We use H+ ion concentration to calculate pH of the
solution.
Answer 2
Option third 1.8 M is correct
7. In the titration of 10.0 mL of 0.500 M NH3 with 0.5 M HCI, calculate...
7. In the titration of 10.0 mL of 0.500 M NH3 with 0.5 M HCI, calculate the pH of the following and sketch the titration curve. Kb 1.8 x 10 f. Before the titration starts g. After addition of 2.5 ml of HCl h. After addition of 5.0 ml of HCI i. After addition of 10.0 ml of HC
A 25.0 ml sample of a 0.100 M solution of aqueo us ammonia is titrated with a 0.125 M solution of HCI.
Ka * Kb = Kw = 1.0 X 10-14 A 25.0 ml sample of a 0.100 M solution of aqueo us ammonia is titrated with a 0.125 M solution of HCI. Calculate the pH of the solution after 0.00, 10.0, 20.0, 30.00, and 40.0 mL of acid have been added; Kb of NH3= 1.8 X 10-5 at 25 °C. Hint: First find the moles after each 10.00 ml of acid is added. Then find the concentration after equilibrium is reached.
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2...
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2], and what is the pCa? The formation constant of CaY, Kaa 5.0 x 1010, and α4 of EDTA at pH 10.0 is 0.35
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point...
1) 7. 10.0 mL of 0.10 M HBr is mixed with 10.0 mL of 0.10 M...
1) 7. 10.0 mL of 0.10 M HBr is mixed with 10.0 mL of 0.10 M HCOOH. What is the pH? 2) 15. Calculate the pH of a solution containing 2.5 x 10 –2 mol of nicotinic acid (a monoprotic acid dissolved in 350 mL of water. ( K a = 1.1 x 10 -5 ) 3) A 1.0 L buffer solution is made up of 0.15M NaF and 0.20 M HF ( pK a = 3.17) . 0.05 mol...
0. A solution of formic acid (HCOOH, Ka 1.8 x 10) has a pH of 2.70....
0. A solution of formic acid (HCOOH, Ka 1.8 x 10) has a pH of 2.70. Calculate initial concentration of formic acid in this solution.
If 10.0 mL of 2.0 x 10-3M Cr(NO3)3 is added to 10.0 mL of a...
If 10.0 mL of 2.0 x 10-3M Cr(NO3)3 is added to 10.0 mL of a pH = 10.0 NaOH solution, will a precipitate form?
What is the pH of a solution made by adding 10.0 mL of 0.10 M HCl...
What is the pH of a solution made by adding 10.0 mL of 0.10 M HCl to 25.0 mL of 0.10 M NH3? Kb of NH3 is 1.8 X 10-5.
4. What is the pH of 2.00mL of 1.0 M HCI solution diluted to 50.0 mL?...
4. What is the pH of 2.00mL of 1.0 M HCI solution diluted to 50.0 mL? ( 2pts)
1.If 23 ml of 2.0 M NaOH was required to neutralize 10.0 ml of HCl, what...
1.If 23 ml of 2.0 M NaOH was required to neutralize 10.0 ml of HCl, what is the molarity of the HCl? 2.What volume (in L) of a 2.08 M NaOH solution is required to neutralize 0.53 mol of HCl? *Remember to report your answer using the proper significant digits. 4.A student has finished the titration of a sample of HBr of unknown concentration with 0.2 M NaOH. The student notices small drops of unreacted NaOH were left on the...
References Calculate the hydronium ion concentration and the pH when 10.0 mL of 0.45 M NH,...
References Calculate the hydronium ion concentration and the pH when 10.0 mL of 0.45 M NH, is mixed with 10.0 mL of 0.45 M HCI (K-5.6 x 10- Concentration - pH-
7. In the titration of 10.0 mL of 0.500 M NH3 with 0.5 M HCI, calculate the pH of the following and sketch the titration curve. Kb 1.8 x 10 f. Before the titration starts g. After addition of 2.5 ml of HCl h. After addition of 5.0 ml of HCI i. After addition of 10.0 ml of HC
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point (i.e. 50.0 mL EDTA has been added), what is the equilibrium concentration of Ca2, [Ca2], and what is the pCa? The formation constant of CaY, Kaa 5.0 x 1010, and α4 of EDTA at pH 10.0 is 0.35
4. 50.0 mL of 0.00200 M Ca2 solution buffer at pH 10.0 is titrated with 0.00200 M EDTA. At equivalence point...
0. A solution of formic acid (HCOOH, Ka 1.8 x 10) has a pH of 2.70. Calculate initial concentration of formic acid in this solution.
What is the pH of a solution made by adding 10.0 mL of 0.10 M HCl to 25.0 mL of 0.10 M NH3? Kb of NH3 is 1.8 X 10-5.
4. What is the pH of 2.00mL of 1.0 M HCI solution diluted to 50.0 mL? ( 2pts)
References Calculate the hydronium ion concentration and the pH when 10.0 mL of 0.45 M NH, is mixed with 10.0 mL of 0.45 M HCI (K-5.6 x 10- Concentration - pH-
Most questions answered within 3 hours.
-
The random variable X is exponentially distributed, where X
represents the time it takes for a...
asked 12 minutes ago -
a) Write a verilog module for 1:4 Demultiplexer using verilog
primitives.
b) Design 1-to-4 DEMUX using...
asked 7 minutes ago -
MATLAB
write a MATLAB function (1) output a third-order polynomial
function with the coefficients as the...
asked 19 minutes ago -
A z-score
communicates a raw score’s "relative standing"
under the normal curve in relation to:
asked 28 minutes ago -
An object is vibrating on a spring with the following equation
of motion:
?=(30 ??)cos((2?)/(160)?)
a)...
asked 27 minutes ago -
Vulcan Flyovers offers scenic overflights of Mount St. Helens,
the volcano in Washington State that explosively...
asked 30 minutes ago -
If organizations do not adapt fast enough and move incrementally
from the twentieth-century model to the...
asked 31 minutes ago -
A helium balloon with 2.5L of gas has a gauge pressure of 10,000
Pa. The balloon...
asked 35 minutes ago -
What is responsible for Jupiter's enormous magnetic field?
asked 50 minutes ago -
At the end of the year, a company offered to buy 5,000 units of
a product...
asked 51 minutes ago -
Implement C++ program for each of the following.
Let D = [-48, -14, -8, 0, 1,...
asked 1 hour ago -
Consider a labor market in which LD = 400 – 4W and LS = 250 +...
asked 1 hour ago