Calculate the formula weight for values of X

[cyberdx16]

I don't really know where to start with this, here's the question

the general formula for the copper ammine complex is [Cu(NH3)x]SO4*H2O

calculate the formula weight for several X values of X.(What are reasonable values for x?)

Do i just plug in random #s for X and figure out the molecular weight?

Thx!

 

[greisen]

I pressume that you want to know how many NH_3 molecules that coordinates to Cu - so assume that you are able to experimentally get the mass of the complex than you can determine X - so calculate the mass of the complex by using X = 1,2...

(Or at least that is how I understand your exercise.)

 

[Blueshift5]

I would first clarify the question by asking for the purpose of calculating the formula weight for different values of X. Is it for an experiment or a theoretical calculation? This information would help determine the appropriate values for X to use in the calculation.

Assuming that the purpose is for a theoretical calculation, reasonable values for X would typically be whole numbers, as the formula weight is typically calculated using whole-number coefficients. It would also be helpful to use a range of values for X to see how it affects the overall formula weight.

To calculate the formula weight, we would first need to determine the molar mass of each element present in the formula. The molar mass of Cu is 63.55 g/mol, N is 14.01 g/mol, H is 1.01 g/mol, S is 32.07 g/mol, and O is 16.00 g/mol. We also need to consider the number of each element present in the formula, which is determined by the subscript next to the element symbol.

For example, if we use X = 1, the formula weight would be:

[Cu(NH3)1]SO4*H2O
= (1 x 63.55 g/mol) + (1 x (14.01 g/mol + 3 x 1.01 g/mol)) + (1 x 32.07 g/mol) + (1 x 18.02 g/mol)
= 63.55 g/mol + 17.04 g/mol + 32.07 g/mol + 18.02 g/mol
= 130.68 g/mol

Similarly, for X = 2, the formula weight would be:

[Cu(NH3)2]SO4*H2O
= (1 x 63.55 g/mol) + (2 x (14.01 g/mol + 3 x 1.01 g/mol)) + (1 x 32.07 g/mol) + (1 x 18.02 g/mol)
= 63.55 g/mol + 34.08 g/mol + 32.07 g/mol + 18.02 g/mol
= 147.72 g/mol

We can continue this calculation for different values of X to see how it affects the overall formula weight. It is important to note that the values of X should be reasonable and within the range of 1-4, as the formula