Write the balanced chemical equation for the following reaction. Phases are opti
ID: 943958 • Letter: W
Question
Write the balanced chemical equation for the following reaction. Phases are optional. Solid calcium chlorate decomposes to form solid calcium chloride and oxygen gas. Write the balanced chemical equation for the following reaction. Phases are optional. The reaction of zinc metal and hydrochloric acid produces hydrogen gas and zinc chloride. Enter the net ionic equation, including phases, for the reaction of AgNO_3(aq) and KCI(aq). A 5.49 g sample of a laboratory solution contains 1.47 g of add. What is the concentration of the solution as a mass percentage?Explanation / Answer
(1) Calcium chlorate (solid) ------> Calcium chloride (solid) + Oxygen (gas)
The balanced equation is : Ca(ClO3)2 (s) = CaCl2 (s) + O2 (g)
(2) Zinc (solid) + Hydrochloric acid ( aqueous) -----> Zinc chloride ( aqueous) + Hydrogen (gas)
The balanced equation is: Zn(s) + 2HCl (aq) = ZnCl2 (aq) + H2 (g)
(3) AgNO3 (aq) + KCl (aq) = AgCl (s) + KNO3 (aq)
Ionic equation: Ag+ (aq) + NO3- (aq) + K+ (aq) + Cl- (aq) ---> AgCl (s) + K+(aq) + NO3- (aq)
Net ionic equation: Ag+ (aq) + Cl- (aq) -----> AgCl (s)
(4) Mass percentage = ( 1.47 g / 5.49 g ) x 100% = 26.77 %
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