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1- Cl2 (g) major entities present

• Cl- ( aq) , H2O (l)
• Cl2 (g), H2O (l)

2- Na2Cr2O7 (s) major entities present

• Na+ (aq) , Cr2O72- (aq) , H2O (l)
• Na2Cr2O7(aq) , H2O (l)
• Na2Cr2O7(s) , H2O (l)

3- Sr( OH)2 (s) major entities present

• Sr2+ (s), OH- (s) , H2O (l)
• Sr2+ (aq) , OH- (aq) , H2O (l)
• Sr (OH)2 (s), H2O (l)

4- C2H5OH (l)

• C2H5OH (aq) , H2O (l)
• C2H5OH (l), H2O (l)
• C4+ (aq), H+ (aq), O2- (aq), H2O (l)

5- CH4 (g)

• C4+ (aq), H+ (aq), H2O (l)
• CH4 (aq) , H2O (l)
• CH4 (g), H2O (l)