Forwarded from فيزياويه كورس2
Forwarded from فيزياويه كورس2
Hydro - alcoholic solution is a mixture of ....
Anonymous Quiz
9%
Volatile oil + water
83%
Alcohol + water
8%
Aceton + alcohol
Forwarded from فيزياويه كورس2
The rate, velocity, or speed of a reaction is given by the expression
A . dc/dt
B . dt/dc C . dp/dt D . dv/dt
A . dc/dt
B . dt/dc C . dp/dt D . dv/dt
Anonymous Quiz
78%
A . dc/dt
5%
B . dt/dc
3%
C . dp/dt
13%
D . dv/dt
Forwarded from فيزياويه كورس2
Rate of the reaction = k [A]
1
[B] 2 , the order of reaction with respect to A
1
[B] 2 , the order of reaction with respect to A
Anonymous Quiz
25%
A . zero order
44%
B . first order
31%
C . second order
Forwarded from فيزياويه كورس2
is the number of molecules, atoms ,or ions reacting in an elementary process
Anonymous Quiz
7%
A . Normality
16%
B . Molarity
77%
D . Molecularity
Forwarded from فيزياويه كورس2
2NO + O
2
→ 2NO 2 the order has been found experimentally to be second ord
2
→ 2NO 2 the order has been found experimentally to be second ord
Anonymous Quiz
57%
T
43%
F
Forwarded from فيزياويه كورس2
Forwarded from فيزياويه كورس2
Forwarded from فيزياويه كورس2
The linear expression in log C = log C
o
– Kt / 2.303 , If a straight line is obtained, it indicates that the reaction is A . zero order reaction B . second order reaction C . third order reaction D . first order reaction
o
– Kt / 2.303 , If a straight line is obtained, it indicates that the reaction is A . zero order reaction B . second order reaction C . third order reaction D . first order reaction
Anonymous Quiz
16%
. zero order reaction
14%
second order reaction
6%
third order reaction
64%
first order reaction
Forwarded from فيزياويه كورس2
For calculation of half life of reaction follows first order;
Anonymous Quiz
3%
½ = 4.606/k minutes
9%
t ½ = 6.909/k minutes
88%
t ½ = 0.693/k minutes
Forwarded from فيزياويه كورس2
The unit of first order rate constant is:
Anonymous Quiz
21%
mole . liter -1 .second -1
14%
liter . second-1 . mole-1
65%
second -1
Forwarded from فيزياويه كورس2
Forwarded from فيزياويه كورس2
When two reactants in the reaction have different initial concentration the difference is big the reaction is
Anonymous Quiz
26%
Second
7%
Third
67%
Pseudo first
Forwarded from فيزياويه كورس2
Forwarded from فيزياويه كورس2
The half - life of second order reaction is equals l
Anonymous Quiz
65%
1 / ak
19%
0.693 / k
15%
0.105 / k
Forwarded from فيزياويه كورس2
The Arrhenius equation for effect of temperature on the hydrolysis of a drug in aqueous solution :
Anonymous Quiz
36%
Predicts that a plot of log k against temperature will be linear .
34%
Predicts that the rate of reaction will decrease as temperature increased .
30%
) Predicts that a plot offlog k against the reciprocal of temperature will be linear
Forwarded from فيزياويه كورس2
The stability of drug affected by the following except :
Anonymous Quiz
12%
Temperature
18%
Humidity
12%
Light
58%
Pressure
Forwarded from فيزياويه كورس2
The activation energy in a chemical reaction is defined as
Anonymous Quiz
56%
the difference in energy of intermediate complex and the average energy of reactants
28%
the difference in energies of reactants and products
17%
the sum of energies of reactants and products
Forwarded from فيزياويه كورس2
Which of the following plots will yield a straight line for a first order ? reaction where the slope = -k
Anonymous Quiz
30%
time versus 1 / [ A ]
37%
In [ A ] versus time
33%
In k versus time
Forwarded from فيزياويه كورس2
When the rate of the reaction is equal to the rate constant , the order of the reaction is
Anonymous Quiz
15%
Second
18%
First
68%
Zero