CBSE
for following reaction will be .
RT
Which one of the following aqueous solutions of salts has the lowest pH value ?
CH3COONa
NaCl
NH4OOCCH3
NH4Cl
K2Cr2O7 in acidic medium converts into
Cr2+
Cr3+
Cr4+
Cr5+
pKa increases in benzoic acid when substituent "x" is bonded at para-position, then "x" is
-COOH
-NO2
-CN
-OCH3
If the solubility of PbCl2 at 25°C is 6.3 x 10-2 mol/L , its solubility product is :
1 x 10-6
1 x 10-3
1.1 x 10-6
1.1 x 10-5
At 60° and 1 atm, N2O4 is 50% dissociated into NO2 then KP is
1.33 atm
2 atm
2.67 atm
3 atm
pH of a solution can be expressed as :
-loge [H+]
-log10 [H+]
loge [H+]
log10[H+]
Which of the following is most basic?
Al(OH)3
Cr(OH)3
La(OH)3
Fe(OH)3
Which has the highest pH?
CH3COOK
Na2CO3
NH4Cl
NaNO3
At equilibrium which is correct?
G = 0
S = 0
H = 0
= 0