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  3. a) a solution of ba(oh)2 has a molarity of 0.00617

A) A solution of Ba(OH)2 has a molarity of 0.00617 mol/L. Calculate the final pH of...

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Chemistry

A) A solution of Ba(OH)2 has a molarity of 0.00617mol/L. Calculate the final pH of the solution.

B) Consider the reaction: CaBr2(s) → Ca(s) +Br2(l)

Which of the following statements is correct? Select all thatapply.

Bromide Ion is reducing agent

NOT a spontaneous reaction

Ca is oxidized

Br is Oxidized

Br is Reduced

Ca is Reduced

Calcium Ion is the Reducing Agent

IS a spontaneous reaction

Br ion is the oxidizing agent.

Ca ion is the oxidizing agent.

C) What would cause the equilibrium to shift left CH3COOH(aq) +H2O(l) ⇌ CH3COO–(aq) + H3O+(aq).

Add HCL

pH increasing

Add acetic acid

Acetate Ion addition

D) 3 A2 (g) + 2 Z3 (g) ↔ 3Z2A2 (g)
The equilibrium concentrations are: A2 = 0.061 mol/L ;Z3 = 0.769 mol/L ; Z2A2 = 0.245mol/L.
Calculate the value of the equilibrium constant at345oC.

E)

Which of the following equations representsH2BO3− acid

H2BO3− (aq) +H3O+(aq) ⇌ H3BO3 (aq) +H2O(l)

H2BO3− (aq) +HCO3−(aq) ⇌ HBO32−(aq)+ H2CO3(aq)

H2BO3− (aq) + H2S(aq) ⇌ H3BO3(aq) + HS−(aq)

H2BO3− (aq) + H2O(l)⇌ H3BO3(aq) + OH−(aq)

H2BO3− (aq) +NH4+(aq) ⇌ H3BO3 (aq) +NH3(aq)

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