1. Write the equilibrium expressions for the following reactions: a) 2N2O(g) + O2(g) rightarrow 4NO(g)
b) H2(g) + CO2(g) rightarrow H2O(g) + CO(g)
c) 4HCl(g) + O2(g) rightarrow 2Cl2(g) + 2 H2O(g)
d) 3H2(g) + N2(g) rightarrow 2NH3(g)
e) H2(g) + Cl2(g) rightarrow 2HCl(g)
f) 2SO2(g) + O2(g) rightarrow 2SO3(g)
2. Using the above equilibrium expressions, calculate the equilibrium constant, K, for the following concentrations:
a) [N2O] = 0.0035 M, [O2] = 0.0027 M, [NO] = 5.6 x 10-9 M
b) [H2] = 0.61 M, [CO2] = 1.6 M, [H2O] = 1.1 M, [CO] = 1.4 M
c) [HCl] = 1.2 x 10-3 M, [O2] = 3.8 x 10-4 M, [H2O] = 5.8 x 10-2 M, [Cl2] = 5.8 x 10-2 M
d) [NH3] = 0.62 M, [H2] = 0.14 M, [N2] = 0.45 M
e) [H2] = 0.0045 M, [Cl2] = 0.0045 M, [HCl] = 0.0625 M
f) [SO2] = 2.00 M, [O2] = 1.50 M, [SO3] = 3.00 M

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.