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Ch.4 - Chemical Quantities & Aqueous Reactions
All textbooksTro 4th EditionCh.4 - Chemical Quantities & Aqueous ReactionsProblem 111
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Chapter 4, Problem 111

Predict the products and write a balanced molecular equation for each reaction. If no reaction occurs, write 'NO REACTION.' b. KHSO3(aq) + HNO3(aq) c. Aqueous ammonium chloride and aqueous lead(II) nitrate.

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1
Identify the reactants in each reaction: b. Potassium bisulfite (KHSO_3) and nitric acid (HNO_3); c. Ammonium chloride (NH_4Cl) and lead(II) nitrate (Pb(NO_3)_2).
For reaction b, consider the possible products: KHSO_3 can react with HNO_3 to form KNO_3 and H_2SO_3. However, H_2SO_3 is unstable and decomposes into H_2O and SO_2 gas.
Write the unbalanced equation for reaction b: KHSO_3(aq) + HNO_3(aq) → KNO_3(aq) + H_2O(l) + SO_2(g).
Balance the molecular equation for reaction b by ensuring the number of atoms of each element is equal on both sides of the equation.
For reaction c, consider the possible products: NH_4Cl and Pb(NO_3)_2 can react to form PbCl_2, a precipitate, and NH_4NO_3. Write the balanced molecular equation: 2 NH_4Cl(aq) + Pb(NO_3)_2(aq) → PbCl_2(s) + 2 NH_4NO_3(aq).
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Textbook Question

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Predict the products and write a balanced molecular equation for each reaction. If no reaction occurs, write “NO REACTION.” a. H2SO4(aq) + HNO3(aq) b. aqueous strontium sulfide and aqueous copper(II) sulfate.