8. Which of the following reactants, when mixed, would evolve a gas. a) Li2S(aq) + 2HCl(aq)...
12) 12) As defined in the text, identify the "gas evolution" reactions among the following 1. 2HCl(aq) +K2CO3(aq) --H2O(l) + CO2(g) + 2Cl(aq) 2. CH4(g)+202(g) + CO2(g) + 2H2O(1) 3. 2HCl(aq) +K2S(aq) -- H2S(g)+2KCl(aq) A) 1 and 2 only B) 1 and 3 only C) 2 and 3 only D) All of 1, 2, and 3 E) None of 1, 2, and 3 13) 13) Identify the oxidation-reduction reactions among the following: 1. Zn(s)+Cu2(aq) -- Zn2+aq) + Cu(s) 2. 2...
Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) What volume of hydrogen at 0 ∘C and 1.00 atm (STP) is released when 9.40 g of Mg reacts?
Answer the following for the reaction: CaCO3(s)+2HCl(aq)→H2O(l)+CO2(g)+CaCl2(aq) What is the molarity of a HCl solution if the reaction of 215. mL of the HCl solution with excess CaCO3 produces 10.7 LL of CO2 gas at 725 mmHg and 18∘C?
6. Based on the activity series, which single displacement reaction will not occur? Mg(s) + 2HCl(aq) - MgCl2 (aq) + H2(g) SnBr2 (aq) + Zn (s) --- ZnBrz (aq) + Sn (s) Mg(s) + ZnCl2 (aq) --- MgCl, (aq) + Zn (s) Zn (s) + 2HNO, (aq) + 2AGNO, (aq) + H2 (8) SnBrz (aq) + Cu(s) -- CuBr2 (aq) + Sn (s) Question 7 1 pts 7. Based on the definition of oxidation and reduction, which of the following...
3 .Which one of the following reactions is a redox reaction? 1. 2Al(s) + 2KOH(aq) + 6H2O(l) → 2KAl(OH)4(aq) + 3H2(g) 2. Pb(NO3)2(aq) + 2HCl(aq) → PbCl2(s) + 2HNO3(aq) 3. Zn(OH)2(aq) + H2SO4(aq) → ZnSO4(aq) + 2H2O(l)
Calcium carbonate (CaCO3) reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s)+2HCl(aq)⟶CO2(g)+H2O(l)+CaCl2(aq) Tums, an antacid, contains CaCO3. If Tums is added to 10.0 mL of a solution that is 0.400 M in HCl, how many grams of CO2 gas are produced?
Question 171 pts Predict the products for the following set of reactants, including physical states, or indicate "No Reaction" (and do not indicate the aqueous products) when appropriate: Na2CO3(aq) + AgNO3(aq) → Group of answer choices NaNO3(s) NaNO3(aq) Ag2CO3(s) Ag2CO3(aq) CO2(g) CO2(aq) No Reaction Flag this Question Question 181 pts Predict the products for the following set of reactants, including physical states, or indicate "No Reaction" (and do not indicate the aqueous products) when appropriate: Na2CO3(aq) + BaCl2(aq) → Group...
balance each of the following equations Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue book. Plesse leave at least two lines between question and show your calculations for full credit. N-6.023 x 10” particles per mol: R 0.08.205 L-atm/(mol-K) b) Al2(PO4) 3 e) CuSO4-5 H2O 1. Calculate the molar masses of: a) (NH4)2SO4 2. Calculate: a) the number of atoms of calcium in a 10.50 g sample of the metal b) the mass...
Which of the reactions are exothermic? 2Mg(s)+O2(g)⟶2MgO(s)+heat2Mg(s)+O2(g)⟶2MgO(s)+heat NH3(g)+HCl(g)⟶NH4Cl(s)+heatNH3(g)+HCl(g)⟶NH4Cl(s)+heat AgCl(s)+heat⟶Ag+(aq)+Cl−(aq)AgCl(s)+heat⟶Ag+(aq)+Cl−(aq) 2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g)2Fe2O3(s)+3C(s)+heat⟶4Fe(s)+3CO2(g) C(graphite)+O2(g)⟶CO2(g)+heatC(graphite)+O2(g)⟶CO2(g)+heat CH4(g)+2O2(g)⟶CO2(g)+2H2O(l)+heat
WOL 2. What volume of 0.250 M HCl is required to completely react with 0.350 g of Na2CO3? Na2CO3(s) + 2HCl(aq) + 2NaCl(aq) + H2O(l) + CO2(g) 3. Calcium carbonate decomposes at high temperatures to give calcium oxide carbon dioxide. What volume of CO2 will be collected at 950 torr and 500°C when 75.0 g of CaCO3 react? CaCO3(s) → Cao(s) + CO2(g) 4. How many mL of 0.250 M KMnO4 are needed to react with 3.36 g of FeSO4...