Question

Which reaction(s) will have a positive entropy change? Select all that apply. Entry field with incorrect...

Which reaction(s) will have a positive entropy change? Select all that apply. Entry field with incorrect answer now contains modified data

(a) I2(s) → I2(g)

(b) Br2(g) + 3Cl2(g) → 2BrCl3(g)

(c) NH3(g) + HCl(g) → NH4Cl(s)

(d) CaO(s) + H2O(l) → Ca(OH)2(s)

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

(a) I2(s) → I2(g)
entropy of gas is more than entropy of solid
so, entropy change is positive

(b) Br2(g) + 3Cl2(g) → 2BrCl3(g)
there is less number of gaseous molecules on product side than on reactant side. So, entropy change in negative

(c) NH3(g) + HCl(g) → NH4Cl(s)
entropy of gas is more than entropy of solid
so, entropy change is negative

(d) CaO(s) + H2O(l) → Ca(OH)2(s)
entropy of liquid is more than entropy of solid
so, entropy change is negative

Answer: a

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Which reaction do you predict would have a positive (+) value for entropy (  S)? CO2 (s)...
Which reaction do you predict would have a positive (+) value for entropy (  S)? CO2 (s) → CO2 (g) H2O (l) → H2O (s) H2 (g) + Cl2 (g) → 2 HCl (g) N2 (g) + 3 H2 (g) → 2 NH3 (g) Ag+ (aq) + Cl- (aq) → AgCl (s)
Predict whether the entropy change of the system is positive of negative: for NH4Cl(s) --> NH3(g)...
Predict whether the entropy change of the system is positive of negative: for NH4Cl(s) --> NH3(g) + HCl(g)
Predict the sign of the entropy change, ΔS∘, for each of the reaction displayed. Explain your...
Predict the sign of the entropy change, ΔS∘, for each of the reaction displayed. Explain your Reasoning for each. A. CH3OH(l) --> CH3OH(s) B. N2(g) + 3H2(g) --> 2NH3(g) C. CH4(g) + H2O(g) --> CO(g) + 3H2(g) D. 2HBr(g) --> H2(g) + Br2(l)
Select the reactions for which we should expect a delta S (entropy) to be >0. Can...
Select the reactions for which we should expect a delta S (entropy) to be >0. Can select more than one. CO2 (g) + 2H2 (g)-->CH3OH (l) 2SO2 (g) + O2 (g)--> 2SO3 (g) Ba(OH)2 (s)-->BaO (s)+ H2O (g) FeCl2 (s) + H2(g)-->Fe (s)+2HCl (g)
PART 1. Which of the following reactions are spontaneous (favorable). Check all that apply. A. 2Mg(s)+O2(g)--->2MgO(s)...
PART 1. Which of the following reactions are spontaneous (favorable). Check all that apply. A. 2Mg(s)+O2(g)--->2MgO(s) delta G=-1137kj/mol B.NH3(g)+HCl(g)--->NH4Cl(s) delta G=-91.1 kj/mol C.AgCl(s)--->Ag+(aq)+Cl-(aq) delta G=55.6 kj/mol D.2H2(g)+O2(g)--->2H2O(g) delta G=456 kj/mol E.C(s)+H2O(l)--->CO(g)+H2(g) delta G=90.8 kj/mol F.CH4(g)+2O2(g)--->CO2(g)+2H2O(l) delta G=-820 kj/mol PART 2. Calculate the standard entropy, ΔS°rxn, of the following reaction at 25.0 °C using the data in this table. The standard enthalpy of the reaction, ΔH°rxn, is –633.1 kJ·mol–1. 3C2H2(g)--->C6H6(l)   ΔS°rxn=____JxK-1xmol-1 Then calculate Gibbs free energy for ΔG°rxn in kjxmol-1 Finally,...
Which of the following are processes that decrease entropy? (select all that aply) Answers Pb2+(aq)+S2?(aq)?PbS(s) NaCl(s)?Na+(aq)+Cl?(aq)...
Which of the following are processes that decrease entropy? (select all that aply) Answers Pb2+(aq)+S2?(aq)?PbS(s) NaCl(s)?Na+(aq)+Cl?(aq) Ca2+(aq)+CO2?3(aq)?CaCO3(s) CaO(s)+CO2(g)?CaCO3(s) 1) Suppose the reaction A?B has a small positive ?G?. The reaction would proceed _______, and when equilibrium is reached, _______ would be present. Answers From A to B; a large excess of B over A From B to A; a small excess of B over A From A to B; a large excess of A over B From B to A;...
1-Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of...
1-Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: Round your answer to zero decimal places. N2(g)+3H2(g)---2NH3(g) Round your answer to zero decimal places. 2-Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of the following chemical reaction: →+4H2O2lPbSs+PbSO4s4H2Ol Round your answer to zero decimal places. substance Δ Hf ° (kJ/mol) Δ Gf ° (kJ/mol) S ° (J/mol∙K) Aluminum Al3+ (aq) --- -485.0 ---...
1. Which of the following balanced molecular equations represent reactions for which the rate law expression...
1. Which of the following balanced molecular equations represent reactions for which the rate law expression could likely be determined via time to turbidity determinations? Select all that apply. a. 3 SrCl2 (aq) + 2 Li3PO4 (aq) ---> Sr3(PO4)2 (s) + 6 LiCl (aq) b. 2 HBr (aq) + Ca(OH)2 (aq) ---> 2 H2O (l) + CaBr2 (aq) c. FeS (s) + HCl (aq) ---> FeCl2 (aq) + H2S (g) d. 2 NO (g) + 5 H2 (g) ---> 2...
please answear each question 1)At equilibrium, ________. a)the rates of the forward and reverse reactions are...
please answear each question 1)At equilibrium, ________. a)the rates of the forward and reverse reactions are equal b)the value of the equilibrium constant is 1 c)all chemical reactions have ceased d)the rate constants of the forward and reverse reactions are equal e)the limiting reagent has been consumed 2)The equilibrium-constant expression depends on the ________ of the reaction. a) stoichiometry b) mechanism c) the quantities of reactants and products initially present d) temperature e) stoichiometry and mechanism 3)Given the following reaction...
ASAP FOR ALL QUESTIONS ABOUT THE Le Chatelier’s Principle LAB Procedure : I ) NaCl (s)...
ASAP FOR ALL QUESTIONS ABOUT THE Le Chatelier’s Principle LAB Procedure : I ) NaCl (s)   ßà   Na+ (aq)   + Cl- (aq)          *Add few drops of conc. HCl to 2 to 3 mL of saturated NaCl solution. II ) NH4Cl(s) ßà NH4+ (aq) + Cl-(aq)          *Add few drops of conc. HCl to 2 to 3 mL of saturated NH4Cl solution. III ) Fe+3(aq) + SCN-(aq) ßà Fe(SCN)+2(aq)          Prepare a stock solution by mixing 2mL each of 0.1M...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT