At 30C the solubility of Ag2CO3 (Ksp=8 x 10-12) would be greatest in one litre of
0.05 M Na2CO3
0.05 M AgNO3
pure water
0.05 N NH3
D.
0.05 N NH3
Due to the common ion effect, the solubility decreases, so the solubility of Ag2CO3 would be greatest in 1 L of 0.05 M NH3 due to the absence of common ion either Ag+ or .
Ammonium ion is
a conjugate acid
a conjugate base
neither acid nor a base
both an acid and a base
Which of the following salt does not get hydrolysed in water?
KClO4
NH4Cl
CH3COONa
None of these
In the reaction: H2 + I2 → HI
In a 2L flask 0.4 moles of each H2 and I2 are taken. At equilibrium 0.5 moles of HI are formed. What will be the value of equilibrium constant Kc?
20.2
25.4
0.284
11.1
Which will make basic buffer?
100mL of 0.1 M CH3COOH + 100mL of 0.1M NaOh
100 mL of 0.1 M HCl + 200 mL of 0.1 M NH4OH
100 mL of 0.1 M HCl + 100 mL of 0.1 M NaOH
50 mL of 0.1 M NaOH + 25 mL of 0.1 M CH3COOH
Conjugate base for BrÖnsted acids H2O and HF are :
H3O+ and F-, respectively
OH- and F-, respectively
H3O+ and H2F+, respectively
OH- and H2F+, respectively