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If a reaction vessel initially contains only co and NH3 at concentrations of 1.00 m and 2.00 m respectively what will the concentration of HCONH2 be at equilibrium?
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∙ 12y ago
You need the k value to solve this.
Wiki User
∙ 12y ago
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When method of successive approximations used in solving acid-base equilibrium problems?
When K_a is close to the molarity of the reactants you can use successive approximtions as opposed to the quadratic formula. You simply ignore the value of x being subtracted from the reactants to find the value of x. This will give you an answer which you then plug back into the equation in place of the x value you initially ignored. If you repeat this procedure of plugging each new answer back in for x, you will find that the answer will begin to become closer and closer to the same value: This is the actual value of x. This should be the initial set up for this type of problem: K_a = some x value (ie. x^2) / (concentration - x)(concentration - x) The K_a value will be given.
What is the ka of the first ionization of h3po4 if you initially had 0.58 m of phosphoric acid and your pH at equilibrium is 3?
[H+] = 10 raised to the -pH, or 10 raised to -3, which equals .001. Then Ka = [H+] squared / Molarity of the solution, which equals 1.72 E(-6).
What is meant by equilibrium condition in a reversible reaction?
What normally are called reactants form products. As more products are formed, in some reactions, they start undergoing the reverse reaction to reform the original reactants. The forward reaction has a certain rate(speed that it occurs) which slows asreactants are used up. The reverse reaction initially has zero rate because there are none of those substances to reverse the process but that reverse rate speeds up as more of those substances are formed. When both rates areEQUAL, the system is at chemical equilibrium.
What is heat blast made of?
Radiation initially.
How do you find the pH of a solution of two strong acids?
A strong base is defined as one that dissociates completely in water (see the Related Questions link to the left for a list of the strong bases). That means for every mole of base added, one mole of free OH- is present in the solution. The pH of solution is defined this way:pH = -log10[H3O+]or in English, the pH is equal to the negative logarithm (in base 10) of the concentration of H3O+ in the solution (the concentration must be in units of Molarity (M), which is moles per liter).To use this, we need to know the concentration of H3O+. But to do this, first we must find the concentration of OH- and we can then use that to find the concentration of H3O+.Because a strong base dissociates completely in water, the number of moles of base added gives the number of moles of OH- present in the solution. There is one complication that you don't have to worry about with strong acids. Two strong bases have 2 OH-'s in their formula, like Ba(OH)2 and Sr(OH)2. These bases release TWICE as many moles of OH- as the number of moles of base added. I will show this in an example below, but first we need to know how to get the concentration of H3O+ from the concentration of OH-! They are related in this way:[H3O+] * [OH-] = 1.0 * 10-14Or in English, the concentration of H3O+ times the concentration of OH- is ALWAYS equal to 1*10-14 in water. So once we know the concentration of OH-, we can easily find the concentration of H3O+ this way:[H3O+] = (1.0 * 10-14) ÷ [OH-]Then we use the definition of the pH above. Here are a few examples:* If you have a solution of 0.1 M lithium hydroxide (LiOH), what is the pH? The concentration of OH- is the same as the concentration of LiOH, 0.1 M.So the concentration of H3O+ is:[H3O+] = (1 * 10-14) ÷ 0.1 = 1 * 10-13 MThe pH is then:pH = -log (1 * 10-13) = 13* If you have a solution of 1.0 M potassium hydroxide (KOH), what is the pH? Just as above, he concentration of OH- is the same as the concentration of KOH, 1.0 M.So the concentration of H3O+ is:[H3O+] = (1.0 * 10-14) ÷ 1.0 = 1.0 * 10-14 MThe pH is then:pH = -log (1.0 * 10-14) = 14* Let's try a twist. If you have a solution of 0.001 M Ba(OH)2, what is the pH?Now the concentration of OH- is twice the concentration of Ba(OH)2, so we have:[OH-] = 2 * 0.001 M = .002 MNow we proceed just as before. So the concentration of H3O+ is:[H3O+] = (1.0 * 10-14) ÷ 0.002 = 5.0 * 10-12 MThe pH is then:pH = -log (5.0 * 10-12) = 11.3 Strong acids and bases have all of the dissolved material completely ionized. The concentration of a monoprotic acid is equal to the concentration of hydrogen ions. The concentration of a monobasic alkali is equal to the concentration of hydroxide ions. The actual concentration of hydrogen ions from pure water is on the order of concentration of E-7 molar, so any concentration of a strong acid or base over E-5 molar completely swamps the comparatively tiny amount of ion from the ionization of water.One bobble point that comes up with newbies is: What is H3O+ and why do we use it.Hydrogen ions don't float around free in solution, they associate with water molecules at the Oxygen side. The slight negative charge of the polar bonds attracts the positive Hydrogen atom in a weak temporary bond that allows the ions to move from molecule to molecule. This effect is often found when Hydrogen is part of a molecule and results in things like holding DNA strands together, color separation in color chromatography, Gas Chromatograph column separations,... Hence the name: Hydrogen Bonding
Where molecules diffuse in?
molecules go with the concentration gradient, depending if the cell is hypotonic or hypertonic (research that.)AnswerBecause the molecules of solute are mutually repelled but are attracted to the molecules of the solvent. They therefore tend to spread throughout the solvent until they are evenly distributed.Actual AnswerMolecules diffuse because they are always randomly moving around (brownian motion). The molecules have no real sense of high or low concentration. It's their random movement that make it seem like they go from high to low concentration.
What is meant by Sodium acetate is a basic salt?
Sodium acetate is called a basic salt because a solution of it in initially pure water has a pH value well above the neutral value of 7. This occurs because acetate ions when dissolved in water must come to an equilibrium in the ionic reaction C2H3O2-1 + H2O <-> C2H4O2 + OH-1 and sodium ions when dissolved in water must come to an equilibrium in the ionic reaction Na+1 + H2O <-> NaOH + H+1. Additionally, water itself must maintain an equilibrium in the ionic reaction H2O <-> H+1 + OH-1. The values of these three equilibrium constants are such that the net result is a higher concentration of hydroxide ions than of hydrogen ions in a solution of sodium acetate. These relative concentrations of hydroxide and hydrogen ions is the defining characteristic of a basic (or alkaline) aqueous solution: Such a relative concentration of hydroxide and of hydrogen ions, although not all the other characteristics of a sodium acetate solution, could be achieved by dissolving an appropriate amount of the base sodium hydroxide in initially pure water.
What was the first Concentration Camp to be built in the Holocaust?
Buchenwald, though initially it was called Ettersberg (for a couple of weeks or so).
What is a solution at equilibrium?
equilibrium means the rate of forward reaction = rate of backward reaction... there are three types of equilibrium 1. amount of products > amount of reactants 2. amount of products = amount of reactants 3. amount of products < amount of reactants
What year was mrgoodbar made?
The chocolate bar was initially made in 1925 by Hershey and was then modified in 1996 and 2008 for more peanuts and less expensive cocoa, respectively.
How long did westerbork concentration last?
Westerbork concentration camp was in operation from October 1942 to April 1945, making it around two and a half years. It was initially set up by the Dutch government as a transit camp for Jews before they were deported to extermination camps in Eastern Europe during the Holocaust.
What is rest position or equilibrium position?
Rest position or equilibrium position occurs when all the forces (gravity, the wind, friction etc) exerted on an object are equal.For example, a rolling ball is not in equilibrium because one or more forces (gravity or the force you used to initially move the ball) are greater in strength than the friction (both between the ball and the surface it is rolling on and between the ball and the air).The ball will stop rolling when the force causing it to move 'forwards' is overcome by frictional force. The ball will then be in equilibrium, or at rest.
What is he onset of action of Fentanyl patch?
On first application it usually takes 24-72 hours for serum concentrations of fentanyl to reach a peak, so it may not be until the second patch has been applied that a steady-state concentration is reached. Break-through analgesia may be required initially. Wean other analgesics slowly after the first patch.2 The patch should be changed every 72 hours.
Can you explain the procedure used to find the rate law?
Basically, you compare two initial concentrations of the reactants. Initially you start off with the variables x and y. To find x, you take a set of concentrations where the base of y's that are being compared are the same. That way, everything cancels out just leaving the x to solve. Then the same process can be done to solve y. Then there you have it. RATE LAW!
Napoleon Bonaparte conquered?
Northern Italy initially: Austria, Prussia and then attacks Russia. But in the meantime he dominates, Britain apart, Europe. Austerlitz & Jena/Auerstadt are the high points 1805 1806 respectively.
Why does the Wiesel family not have to leave their house initially Night?
The Wiesel family is not required to leave their house initially because, at that time, the Jewish community is not yet being forcibly deported to concentration camps. They are still living in their home freely before they are eventually rounded up and transported to the camps.
What was different between the extermination camps and the concentration camps?
Technically all camps were within the concentration camp system, there were labour camps, transit camps and extermination camps. Concentration camps were generally intended for civillians, initially just for criminals, but gradually more types were included. Extermination camps were established about seven and a half years after the first concentration camps. They were much smaller than the average concentration camps (Auschwitz is an exception as it was both), as they only held enough inmates that were needed to opperate the gas chambers/vans and the cramatoria.
