The given equation is is

this is not balanced
The balanced equation will be:

Now as per it if we are using eight moles of HNO3 we are getting two moles of NO
so for each mole of NO we have to take four moles of HNO3
Hence the mole ratio of NO produced to HNO3 reacted will be = 1:4
Answer:
(A)
Solubility will increase.
(B)
Solubility will decrease.
(C)
Solubility will decrease.
Explanation:
a) According to Le Chatelier's Principle when a change is introduced in a reaction system at equilibrium, the system responds by the reaction shifting in the direction to counter the change introduced.
When the change introduced is addition of acid, some
are consumed due to it and the system would respond by reaction shifting towards creation of more
in the system by increased dissolution. Thus solubility increase.
(b) When
are added, the reaction shifts to counter the change introduced of increased
by shifting to side that decreases the increased
. That happens by reaction shifting towards some
precipitating back. Hence solubility decreases.
(c) The change introduced is addition of
which will be countered by reaction shifting to side that decreases increased
, which happens by some
precipitating back. Hence solubility decreases.
Answer:
3.9%
Explanation:
Exact melting point = 123°C
Measured melting point = 128°C
% error; |measured - exact|/exact × 100
% error = |123 -128|/128 × 100
%error = 3.9%
Percentage error in temperature measurement = 3.9 %