26. Q Q
The equation shows the equilibrium between dinitrogen tetroxide, N. O.. and nitrogen dioxide.
NO2
The colours of the reactant and product are also shown.
N. O.(9) 2NO (9)
colourless brown
The forward reaction is endothermic
Which statement is not correct?
A At equilibrium the concentrations of the reactant and the product are constant
B. At equilibrium the rate of the forward reaction is equal to the rate of the reverse reaction.
с When the pressure is increased a darker brown colour is seen.
D
When the temperature is increased a darker brown colour is seen.

може ли да зареждате повече информация, моля

the answer is d.) potassium

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o