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2. Calculate the mole fraction of NaCl in a solution containing 12.6 g NaCl and 21.3 g KCl in 122 g of water.
3.A solution of phosphoric acid was made by dissolving 10.0 g of H3PO4 in 100.0 mL of water. The resulting volume was 104 mL. Calculate the molarity of the solution. Assume water has a density of 1.00 g/cm3.
1)NaHSO3 (for H2SO3: Ka1=1.5×10−2, Ka2=6.3×10−8) and NaOH
2)Ba(OH)2 and HBr
What is the pH of a solution of 0.900 M KH2PO4, potassium dihydrogen phosphate?
2) Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8×10−5) with 0.20 M HNO3. Calculate the pH after addition of 50.0 mL of the titrant at 25 ∘C.
3)A 30.0-mL volume of 0.50 M CH3COOH (Ka=1.8×10−5) was titrated with 0.50 M NaOH. Calculate the pH after addition of 30.0 mL of NaOH at 25 ∘C.
These are the ionic compounds
Ca (s) + Cl (g)→
CaO (s) + H2O (l)→
FeS (s) + O (g)→
CaO (s) + SO2 (g)→
Na2CO3 ● H2O + heat→
MgCO3 (s) + heat→
Ba(HCO3)2 (s) + heat→
Zn (s) + HCl (aq)→
Ba(NO3)2 (s) + NaOH (aq)→
Al (s)+ HCl (aq)→