Posts tagged as:

equilibrium

Consider the equilibrium: HF + H2O ↔ H3O+ + F- What effect will the addition of HCL have on the equilibrium?

by Admin on May 17, 2010

The answer is that the reaction will shift to the left. I need to know why? there is equal # of moles on both side, so when we add something, it should shift to toward the side with many # of moles. In the above case, there are equal number of moles on both side. .

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How many moles of HF ionize per liter of water to reach equilibrium?

by Admin on March 9, 2010

1.) HF hydrolyzes according to the following equation: HF(aq)+H2O(l)–><– H3O^+(aq)+F^-(aq)
When 0.0300 mol of HF dissolves in 1.0 L of water, the solution quickly ionizes to reach equilibrium. At equilibrium, the remaining [HF]=0.0270 M.
a.) How many moles of HF ionize per liter of water to reach equilibrium?
b.) What are [F-] and [H3O+]?
c.) what is the value of Ka for HF?

2.) Write the equilibrium equation and equilibrium expression for the dissolution of CaSO4(s) with the Ksp value.
b.) Determine the solubility of CaSO4 at 25 degrees C in grams per 100. g H2O.

Thanks!!

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What molecules will dominate ( will be the most common) in the equilibrium mixture of H2, F2 and HF?Note assum?

March 6, 2010

What molecules will dominate ( will be the most common) in the equilibrium mixture of H2, F2 and HF?Note assume the value for K = 400 for the reactionH2(g) + F2(g) 2 HF(g)Fill in the blank with the symbol for the most common molecule in the equilibrium mixture__________ Share on Facebook

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What molecules will dominate ( will be the most common) in the equilibrium mixture of H2, F2 and HF?

February 21, 2010

What molecules will dominate ( will be the most common) in the equilibrium mixture of H2, F2 and HF?Note assume the value for K = 400 for the reactionH2(g) + F2(g) 2 HF(g)Fill in the blank with the symbol for the most common molecule in the equilibrium mixture__________ Share on Facebook

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How do you calculate the equilibrium amounts of H2 and HF?

February 9, 2010

At a high temperature the following reaction has an equilibrium constant of 1.0*10^2 H2(g)+F2(g)—>2HF(g) If 1.00mol of each of H2 and F2 are allowed to come to equilibrium in a 10.0L vessel, calculate the equilibrium amounts of H2 and HF. Share on Facebook

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