Ka<10-3 means______________?
A. Very strong base
B. Very weak acid
C. Very strong acid
D. Very strong salt
Chemical Equilibrium
Idea of pH and pOH was put forward by________________?
Idea of pH and pOH was put forward by________________?
A. Gibbs
B. Einstein
C. Sorenson
D. Chadwick
When the value of Kc is very small then_______________________?
When the value of Kc is very small then_______________________?
A. reaction is at start
B. product conc. Is maximum
C. reactant conc. Is minimum
D. reaction is completed
In case of gases Kc is replaced by_______________?
In case of gases Kc is replaced by_______________?
A. Ka
B. Kb
C. Kp
D. K
At start of reaction the concentration of reactants is_______________?
At start of reaction the concentration of reactants is_______________?
A. high
B. low
C. according to Kc
D. constant
Chemical equilibrium state is_______________?
Chemical equilibrium state is_______________?
A. dynamic state
B. static state
C. free state
D. unidirectional state
Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?
Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?
A. 0.0002M HCI
B. 0.2 mole of NaCI with 0.2 mole of HNO3
C. 0.4 mole of CH3COOH with 0.4 mole of NaOH
D. 0.4 mole of NH3 with 0.2 mole of HCI
Which of following is not a base______________?
Which of following is not a base______________?
A. KOH
B. NH3
C. PH3
D. BF3
In which of the following equilibria will Kc and Kp have the same value ?
In which of the following equilibria will Kc and Kp have the same value ?
A. PCI5 = PCI3 + Cl2
B. N2 + 3H2 = 2NH
C. 2CO + O2 = CO2
D. N2 + O2 = 2NO
Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ?
Sodium benzoate and benzoic acid are mixed in equimolar ration to form buffer if pKa is 2 what will be the pH ?
A. 0
B. 1
C. 2
D. any one