14. Magnesium hydroxide is insoluble. Write the net ionic equation for the react

Question

14. Magnesium hydroxide is insoluble. Write the net ionic equation for the reaction that takes place between a solution of magnesium chloride and a solution of sodium hydroxide a. Mg? (aa) 2Cl (aa) 2Na (aa) 20H (aa)- Mg(OH)20s)+2NaCl(s) b. Mg? (aa) 20H (aa)- Mg(OH)2(s) c. MgCl2(aq) 2NaOH (aq) Mg(OH2(s) 2NaCl(aq) d. MgCl2(aq) NaO H(ag) MgoH (s) NaCl 2(aq) e. Mg? (aq) OH (aa)- MgoH (s) 15. If the molar concentration of sodium sulfate (Na2SO) is 0.10 M, what is the concentration of sodium ion? d. 0.050 M a. 0.400 M e. 0.10 M b. 0.20 M c. 0.30 M 16. A homogeneous mixture of two or more substances is called d. an electrolyte. a. a compound e. a solvent b. a mess. c. a solution

Explanation / Answer

14. MgCl2(aq) +NaOH(aq) --------> Mg(OH)2(s) + 2NaCl(aq)

    Mg+2 (aq)+2Cl- (aq) +2 Na+(aq) + 2OH-(aq) -----> Mg(OH)2(s) + 2Na+ (aq) + 2Cl- (aq)

removal of spectator ions to get net ionic equation

Mg+2 (aq) + OH-(aq) -----> Mg(OH)2(s) >>>>> answer e

e

15. Na2SO4 -------> 2Na+ + SO42-

      0.1M                  2*0.1

[Na+] = 0.2M

b. 0.2M >>>>> answer

16. A homogeneous mixture of two or more substance is called a solution

c. solution

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