Question

hi,
I have a few questions:
1. Consider the reaction when aqueous solutions of magnesium chloride and potassium phosphate are combined. The net ionic equation for this reaction is:
2. Write a net ionic equation for the reaction that occurs when aqueous solutions of barium hydroxide and hypochlorous acid are combined.

Answer 1

1. Consider the reaction when aqueous solutions of magnesium chloride and potassium phosphate are combined. The net ionic equation for this reaction is:

2. Write a net ionic equation for the reaction that occurs when aqueous solutions of barium hydroxide and hypochlorous acid are combined.

Solution:

1. $2 \mathrm{~K}_{3} \mathrm{PO}_{4}(\mathrm{aq}) + 3 \mathrm{MgCl}_{2}(\mathrm{aq}) = \mathrm{Mg}_{3}(\mathrm{PO}_{4})_{2}(\mathrm{s}) + 6 \mathrm{KCl}(\mathrm{aq})$ ;

Type of reaction: ion exchange.

$$6 \mathrm {K} ^ {+} + 2 \mathrm {P O} _ {4} ^ {3 -} + 3 \mathrm {M g} ^ {2 +} + 6 \mathrm {C l} ^ {-} = \mathrm {M g} _ {3} (\mathrm {P O} _ {4}) _ {2} (\mathrm {s}) + 6 \mathrm {K} ^ {+} + 6 \mathrm {C l} ^ {-};$$ $$2 \mathrm {P O} _ {4} ^ {3 -} + 3 \mathrm {M g} ^ {2 +} = \mathrm {M g} _ {3} (\mathrm {P O} _ {4}) _ {2} (\mathrm {s}).$$

2. $\mathrm{HClO(aq)} + \mathrm{Ba(OH)}_2(\mathrm{aq}) = \mathrm{Ba(OH)OCl(s)} + \mathrm{H}_2\mathrm{O(aq)}$ ;

$$\mathrm {H C l O} + \mathrm {B a} ^ {2 +} + 2 \mathrm {O H} ^ {-} = \mathrm {B a} (\mathrm {O H}) ^ {+} + \mathrm {O C l} ^ {-} + \mathrm {H} _ {2} \mathrm {O}.$$

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