Answer:
,Molar mass =169.87 g/mol
Explanation:
The systematic name for silver nitrate is
Now we have to calculate the molar mass of
Molar mass of Ag = 107.87 g/mol
Molar mass of N =14 g/mol
Molar mass of O =16 g/mol
So the molar mass of silver nitrate ( ) is
Explanation:
CH2)3(g)CH3CH=CH2(g) [(CH2)3], M time, min
0.128 0
6.40×10-2 14.4
3.20×10-2 28.8
1.60×10-2 43.2
(1) What is the half-life for the reaction starting at t=0 min? min
Half life is the amount of time required for a substance to decay by half of it's initial concentration.
Starting form 0, the initial concentration = 0.128
After 14.4 mins, the final concentration is now exactly half of the initial concentration. This means 14.4 min is the half life starting from t=0min
What is the half-life for the reaction starting at t=14.4 min?
Starting form 14.4min, the initial concentration = 6.40×10-2
After 14.4 mins (28.8 - 14.4), the final concentration is now exactly half of the initial concentration. This means 14.4 min is the half life starting from t=14.4min
Does the half-life increase, decrease or remain constant as the reaction proceeds?
The half life is a constant factor, hence it remains constant as the reaction proceeds.
(2) Is the reaction zero, first, or second order?
Because the half life is independent of the concentration, it is a first order reaction.
In a zero order reaction, the half life Decreases as the reaction progresses; as concentration decreases.
In a first order reaction, the half life Increases with decreasing concentration.
(3) Based on these data, what is the rate constant for the reaction? min-1
The realtionship between the half life and rate onstant is;
k = 0.693 / half life
k = 0.693 / 14.4
k = 0.048125 min-1
The conclusive test for iron(II) ions is the test by the use of potassium hexacyanoferrate III solution.
In qualitative analysis certain reagents are used to test for the presence of certain cations or anions. Those reagents react in a certain way with those reagents. Usually, a positive test may involve a color change, formation of a precipitate or evolution of a gas.
In the case of iron(II) ions, potassium hexacyanoferrate III solution is used in the conclusive qualitative test for the ion. A positive test involves the appearance of a deep blue precipitate.
Learn more: brainly.com/question/6955504
Answer:
please brainlist answer
Explanation:
The addition of K 3 Fe(CN) 6 to a solution causes the formation of a deep blue precipitate which indicates that iron(II) ions are present.
Answer:
2.90
Explanation:
Any buffer system can be described with the reaction:
Where is the acid and is the base. Additionally, the calculation of the pH of any buffer system can be made with the Henderson-Hasselbach equation:
With all this in mind, we can write the reaction for our buffer system:
In this case, the acid is with a concentration of 0.413 M and the base is with a concentration of 0.237 M. We can calculate the pKa value if we do the "-Log Ka", so:
Now, we can plug the values into the Henderson-Hasselbach
The pH value would be 2.90
I hope it helps!
Answer:
Nice pic there
Explanation:
No need
Answer:
The elemental chlorine was reduced
Explanation: inl the elemental form, the oxidation state of chlorine is =0 on been reduced to Cl-Cl-, the oxidation state reduces to -1