Suppose 0.10 mol of cu(no_3)_2 and 1.50 mol of nh_3 are dissolved in water and diluted to a total volume of 1.00 l. calculate the concentrations of cu(nh_3)_4^2+ and of cu^2+ at equilibrium.

Explanation:

It is known that the coefficients change in concentration and in the exponents.  Hence, the reaction equation will be as follows.

According to the ICE table,

Initial :    0.10         1.50                        0

Change : -x         -4x                        +x

Equilibrium: 0.10 - x  1.50 - 4x            x  

Hence, the mass action expression is as follows.

                        =

As, the value of is huge, it means that the reaction is very product favored. Hence, we need to find the limiting reactant first and then  we get to know what x should be.

In the given reaction ammonia is the limiting reactant, because there is less than 4 times the ammonia as the copper cation. Thus, we expect it to run out first, and so, x is approximately equal to 0.25 M.

So, putting the given values into the above equation as follows.

                              =

From here

                       = M

Therefore, we can "re-solve" for x to get and verify that it is still ≈0.250 M.

                x =

                  =

                    = 0.37491425 M

Thus, we can conclude that concentration of () is  0.37491425 M.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".