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Q 1 (Solubility)
The solubility of silver chloride, AgCl, is 1.26 x 10-5 M at 25 °C.
The solubility of barium fluoride, BaF2, is 3.15 x 10-3 M at 25 °C.
Calculate the solubility product, Ksp, of both compounds.
Q2 The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity
of the isotope will be left
behind? A.1/6
Q3 The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as
the molecules in
A.1.8 gram of H2O
B.12 moles of KMnO4
C.0.6N H2SO4
D.4.6 gram of C2H5OH
Q4 What is the pH of a 0.025 M solution of Hydrobromic Acid?
Q5 Estimate the change in enthalpy, ΔH, for the following reaction:
H2 (g) + Cl2 (g) → 2 HCl (g)

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