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The equation below shows an exothermic reaction. Which statement about this exothermic reaction is not correct? Mg_((s))+2HCl_((aq) )rarrMgCl_(2(aq))+H_(2(g)) Magnesium chloride is soluble in water. Magnesium is above hydrogen in the reactivity series. One mole of magnesium produces one mole of hydrogen gas. The total energy of the products is greater than that of the reactants. Clear selection

The equation below shows an exothermic reaction. Which statement about this exothermic reaction is not correct?\newlineMg(s)+2HCl(aq) →MgCl2(aq)+H2( g) \mathrm{Mg}_{(\mathrm{s})}+2 \mathrm{HCl}_{\text {(aq) }} \rightarrow \mathrm{MgCl}_{2(\mathrm{aq})}+\mathrm{H}_{2(\mathrm{~g})} \newlineMagnesium chloride is soluble in water.\newlineMagnesium is above hydrogen in the reactivity series.\newlineOne mole of magnesium produces one mole of hydrogen gas.\newlineThe total energy of the products is greater than that of the reactants.\newlineClear selection

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Q. The equation below shows an exothermic reaction. Which statement about this exothermic reaction is not correct?\newlineMg(s)+2HCl(aq) →MgCl2(aq)+H2( g) \mathrm{Mg}_{(\mathrm{s})}+2 \mathrm{HCl}_{\text {(aq) }} \rightarrow \mathrm{MgCl}_{2(\mathrm{aq})}+\mathrm{H}_{2(\mathrm{~g})} \newlineMagnesium chloride is soluble in water.\newlineMagnesium is above hydrogen in the reactivity series.\newlineOne mole of magnesium produces one mole of hydrogen gas.\newlineThe total energy of the products is greater than that of the reactants.\newlineClear selection
  1. Solubility Check: Check if magnesium chloride is soluble in water.\newlineMagnesium chloride (MgCl2\mathrm{MgCl_2}) is known to be soluble in water, so this statement is correct.
  2. Reactivity Series Verification: Verify if magnesium is above hydrogen in the reactivity series.\newlineMagnesium is indeed above hydrogen in the reactivity series, which means it can displace hydrogen from acids, so this statement is correct.
  3. Mole Ratio Determination: Determine if one mole of magnesium produces one mole of hydrogen gas.\newlineAccording to the balanced chemical equation, one mole of magnesium reacts with two moles of hydrochloric acid to produce one mole of hydrogen gas. This statement is correct.
  4. Exothermic Reaction Assessment: Assess if the total energy of the products is greater than that of the reactants in an exothermic reaction.\newlineIn an exothermic reaction, the total energy of the products is less than that of the reactants because energy is released to the surroundings. Therefore, this statement is not correct.

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