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ID: 883129 • Letter: T
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Check My Work View Hint View Question Guided Solution For the following aqueous reaction, complete and balance the molecular equation and write a net ionic equation, making sure to include the physical states of the compounds: potassium nitrite + hydrochloric acid Molecular equation: Details of last check answer: HCI (ag)-KNO 2 (ag) KCI (ag)-HNO 2 (ag) HCI (ag)-KNO 2 (ag)-KCl (ag)+HNO 2 (ag) K (ag)+C (a)- KCl (a (aq) Cl (aq) KCl (aq) Net ionic equation: K K (aq)-Cl (a)-KC1 (aq) (ag)+Cl (aq-KCI (ag)Explanation / Answer
1) potassium nitrite + Hydrochloric acid
Molecular Equation: What you written is correct
Net ionic equation: No Reaction
Explanation:
In this equation we can recognize that all four compounds will completely dissociated in water.
H+ (aq) + Cl (aq) + k+ (aq) + NO2 (aq) --->
K+ (aq) + Cl (aq) + H+ (aq) + NO2 (aq)
When we go to remove spectator ions, we notice that all the ions on the reactant side are exactly the same as those on the product side. This would mean that we would cross out all the ions as spectator ions, leaving nothing behind! In fact, that’s exactly what happens in this “reaction.” Because no precipitate or weak electrolyte has formed, our (correct) prediction in this case would be “no reaction.”
2) calcium hydroxide reacts + nitric acid
Molecular Equation: 2HNO3(aq) + Ca(OH)2(aq) --> Ca(NO3)2(aq) + 2H2O(l)
In your previous answer you are not mentioned the physical state for Ca(NO3)2(aq) and 2H2O(l)
Net ionic equation: H+ (aq) + OH- (aq) ---> H2O (l)
2) zinc carbonate + sulphuric acid
Molecular Equation: ZnCO3(s)+H2SO4(aq)--->ZnSO4(aq)+H2O(l)+CO2(g)
In your previous answer you are mentioned the physical state of ZnCO3 as aueous.
Net ionic equation: ZnCO3 (s) + H+ (aq) --------> Zn^2+(aq) + H2O (l)+ CO2(g)
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