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Writing Molecular and Net Ionic Equations

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Wize University Chemistry Textbook > Stoichiometry

Introduction to Chemical Equations and Balancing

6 Activities

Wize University Chemistry Textbook > Chemical Reactions

Net Ionic Equations

3 Activities

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Write the balanced net ionic equations (NIE) and molecular equations (ME) for the following. Show all your work. Be sure to show the states in the final equations as well as the charges on any ions.


A. NaCl (aq) + Pb(NO3)2 (aq) →

ME:

NIE:

What term best describes reaction A?: precipitation reaction/acid-base reaction/redox reaction



B. Mg(OH)2 (aq) + HCl (aq) →

ME:

NIE:

What term best describes reaction B?: precipitation reaction/acid-base reaction/redox reaction



C. HBr (aq) + KCH3COO (aq) →

ME:

NIE:
More Introduction to Chemical Equations and Balancing Questions:
Chemical reactions: Combustion
Select the correct balanced equation for the complete combustion reaction expected to occur between C4H10 and O2.
Balancing equations and naming compounds
Balance these chemical reactions and answer the following questions. Write a 1 in the blank if the coefficient is 1.
1
KF (aq) +
1
HI (aq) →
1
KI (aq) +
1
HF (aq)
The full name of the acid that is produced in this reaction is
hydrofluoric acid
Stoichiometry: Limiting reagents
17g of P4 reacts with 64g of oxygen, O2 as described below in the UNBALANCED reaction. What is the maximum amount of P4O6 that can be formed?
P4(s)+O2(g)→P4O6(s)P_{4(s)}+O_{2(g)}\rightarrow P_4O_{6(s)}
Chemical Reactions: Limiting Reagents
Consider the following unbalanced reaction
Which reagent is in excess?
Balancing Redox Equation
What is the coefficient of KI when the unbalanced expression below is balanced using the smallest whole number coefficients?
K2S2O3 + I2 → K2S4O6 + KI
Sodium metal reacts with water to give sodium hydroxide and hydrogen gas as per the following unbalanced equation:
Na(s)+H2O(l)→NaOH(aq)+H2(g)Na(s)+H_2O(l)\rightarrow NaOH(aq)+H_2(g)
If 1.00 g of sodium were reacted with 0.786 g of water which species would be the limiting reagent?
Which one of the following is not a correct formation equation?
Consider the following unbalanced equation:
Zn (s) + NO3− (aq) + H+ (aq) → Zn2+ (aq) + NH4+ (aq) + H2O (l)
Write the net ionic and complete molecular reaction
Net Ionic and Complete Molecular Equation
Consider the following unbalanced reaction:
KMnO4 (aq) + FeSO4 (aq) + H2SO4 (aq) → Fe2(SO4)3 (aq) + MnSO4 (aq) + K2SO4 (aq) + H2O (l)
Write the balanced net ionic and complete molecular equation
Combustion
Select the correct balanced equation for the complete combustion reaction expected to occur between C3H7OH and O2.
A. C3H7OH + O2 → 3 CO2 + 4 H2O
B. 2 C3H7OH + 9 CO2 → 6 CO2 + 8 H2O + 9 C
Empirical Formulae
An organic compound, C5H12O2, is combusted in air to produce carbon dioxide and water vapour. Balance the chemical reaction that occurs.
Empirical Formulae
4. An organic compound, C3H8O2, is combusted in air to produce carbon dioxide and water vapour. Balance the chemical reaction that occurs.
Chemical Reactions: Balancing Combustion Reactions
Balance the reaction below. Make sure that the reaction has the lowest possible stoichiometric coefficients.
C12H14O    +    O2    →    CO2    +    H2OC_{12}H_{14}O\ \ \ \ +\ \ \ \ O_2\ \ \ \ \rightarrow\ \ \ \ CO_2\ \ \ \ +\ \ \ \ H_2O
Chemical Reactions: Balancing the Combustion of Pyridine
Choose the answer that balances the reaction shown below:
A C4H4O(l)+B O2(g)→C CO2(g)+D H2O(g)\text{A}\ C_4H_4O(l)+\text{B}\ O_2(g)\rightarrow\text{C}\ CO_2(g)+\text{D}\ H_2O(g)
Chemical Reactions: Balancing
Balance the following reaction:
C5H10O(l)+O2(g)→ CO2(g)+H2O(l)\text{C}_5H_{10}\text{O}_{\left(l\right)}+\text{O}_{2\left(g\right)}\rightarrow\ \text{CO}_{2\left(g\right)}+\text{H}_2\text{O}_{\left(l\right)}
What coefficient is in front of oxygen gas in the balanced reaction?
More Net Ionic Equations Questions:
Consider the following unbalanced equation:
Zn (s) + NO3− (aq) + H+ (aq) → Zn2+ (aq) + NH4+ (aq) + H2O (l)
Write the net ionic and complete molecular reaction
Net Ionic Equations
Write the balanced net ionic equation (NIE) and molecular equation (ME) for the following. Show all your work. Be sure to show the states in the final equations as well as the charges on any ions.
(NH4)3PO4(aq) + Zn(NO3)2(aq) →
Consider the following unbalanced equation:
Zn (s) + NO3− (aq) + H+ (aq) → Zn2+ (aq) + NH4+ (aq) + H2O (l)
Write the net ionic and complete molecular reaction
Net Ionic and Complete Molecular Equation
Consider the following unbalanced reaction:
KMnO4 (aq) + FeSO4 (aq) + H2SO4 (aq) → Fe2(SO4)3 (aq) + MnSO4 (aq) + K2SO4 (aq) + H2O (l)
Write the balanced net ionic and complete molecular equation
Acid Base Reaction
Consider the following acid base reaction: H3PO4 (aq) + 3NaOH (aq) → Na3PO4 (aq) + 3H2O (l)
Write the complete and net ionic equation.
Predicting Net Ionic Equation
Write the molecular, complete ionic and the net ionic equations for the following reactions, if a reaction occurs.
1. Pb(NO3)2 (aq) + Na2SO4 (aq) →
2. NaCl (aq) + (NH4)2CO3 (aq) →
Chemical reactions: Spectator ions
(a) Write the net ionic equation for the reaction that occurs when aqueous solutions of Na2S and Cu(NO3)2 are mixed.
(b) What are the spectator ions in this reaction?
Periodic Trends: Reactions with Water
When lithium reacts with water the product(s) is(are):
Predicting Net Ionic Equation
Write the molecular, complete ionic and the net ionic equations for the following reaction:
1. Pb(NO3)2 (aq) + Na2SO4 (aq) → PbSO4 (s) + 2NaNO3 (aq)
What is the net ionic equation for the following chemical reaction?
2 Na3PO4 (aq) + 3 CaCl2 (aq) --> 6 NaCl (aq) + Ca3(PO4)2 (s)