Be sure to answer all parts. 1. Complete and balance the following equations. Wr

Question

Be sure to answer all parts.

1. Complete and balance the following equations. Write the entire equation, including the reactants and products, and include the physical state of each species. (Click in the answer box to activate the palette.)

(a) Na(s) + O2(g)  ?

(b) K(s) + O2(g)  ?

2. The numbers of geometrical isomers and optical isomers of the complex ion [Co(en)3]3+ are, respectively,

2 and 2

1 and 1

3 and 2

1 and 2

2 and 4

3.What elements are alloyed to make stainless steel?

Fe and C

Fe and Mn

Fe and Ni

Fe and Cr

Fe, Cr, and Ni

Explanation / Answer

Ans 1 :

Complete the reaction by writing the suitable product based on the presence of reactant and oxidation states of the elements.

Then carefully observing and noting down the reaction on each side balance the reaction so both the side of reaction has same number of atoms of elements.

So here :

A) 4Na(s) + O2 (g) = 2Na2O (s)

B) 4K (s) + O2 (g) = 2K2O (s)

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