Chemistry Homework Assistance
QuestionAI's chemistry problem solver is a middle school chemistry tutoring tool that summarises key chemical reactions and equations in real-time, featuring a robust learning system to empower even those with a weak foundation in chemistry.
You needn't fret over the elemental properties of the periodic table anymore. Here, you can effortlessly access chemical reactions and reaction principles corresponding to each element. Deductive reasoning from microscopic phenomena to discern the original structure of molecules and atoms is a research technique we staunchly champion.
- a. -0.85V d. -2.37V b. +0.85V 8. Use the Table of Standard Reduction Potential stable,which species would reac with Al^3+ a. Pb only C. Fe and Pb b. Au^3- only d. Both Mg and k 9. The oxidation of hydrogen by oxygen is one of the most-used reactions in fuel. cell technology. The overall reaction which is given below,has a Delta G^circ value of -474kJ/mol What is the standard cell potential for this fuel cell? 2H_(2)(g)+O_(2)(g)arrow 2H_(2)O(l)Delta G^circ =-474kJ/mol a. 2.46V C. 1.23V b. 4.91 V d. 2.46 V 10. Which one of the following equations shows the relationship between standard Gibbs free energy and equilibrium constant? a. K=Delta G^circ C. Delta G^0=-RTlnK b. K=RTlnDelta G^circ d. Delta G^0=RTlnK 11. What is Delta G^circ for the following balanced reaction, if E^ast =+2.431V Al(s)+Fe^2ast (aq)arrow Al^3++Fe(l)E^ast =+2.431V a. -704kJ/mol b. +704kJ/mol C. -235kJ/mol d. -469kJ/mol 12. The value of E^ast for the following reaction is 1.10 V.What is the value of E_(ow) when the concentration of Cu^2+ is 1.0 M and the concentration of Zn^2+ is 0.025 M? Zn(s)+Cu^2+(aq)arrow Cu(s)+Zn^2+(aq)E^2=1.10 V.[Cu^2+]=1.0M [Zn^2+]=0.025M and a. 1.40 V b. 0.95 V C. 1.15V d. 0.80 V
- Calculate the enthalpy change , in kJ, for this dissociation of mole of propan-1-ol. C_(3)H_(7)OH(g)arrow 3C(g)+8H(g)+O(g) C-H C-C C-O O -H Mean bond dissociation enthalpy / 412348_360463 kJmol^-1 Select one: -4751 -4403 +4403 +4751
- 6 (a) Molten zinc chloride is an electrolyte. (i) Which row shows the products formed at the anode and at the cathode when molten zinc chloride is electrolysed? & product at anode & product at cathode A & oxygen & zinc B & chlorine & hydrogen C & chlorine & zinc D & oxygen & hydrogen (ii) Which of the following is the reason why molten zinc chloride is an electrolyte? A it contains molecules that can move B it has a giant structure C it contains delocalised electrons D it contains ions that can move
- Ex. 2 Complete the following equations,write main products : CH_(2)=CHC(CH_(3))_(3)+HBrarrow CH_(3)CH=CH_(2)+HBrxrightarrow (ROOR) (3) +KMnO_(4)xrightarrow (acidic) (4) CH_(3)leftharpoons CH+HBrarrow (5) CH_(3)Cequiv CCH_(3)+KMnO_(4)xrightarrow (acidic)
- 012 3 2 In the reaction, 575g of sodium was added to 7.0g of chlorine. Explain why chlorine is the limiting reactant. You must show your working. __