Interpretation:
The equilibrium constant should be calculated for the following reactions at
Concept Introduction
Spontaneous Reaction: A reaction is said to be spontaneous if it occurs without being driven by some outside force. There are two driving force for all
The first is enthalpy, and the second is entropy. In this reaction the outside intervention does not influenced the reaction.
Standard cell potential:
In an electrochemical cell, an electric potential is created between two dissimilar metals.
This potential is a measure of the energy per unit charge which is available from the
To Calculate The equilibrium constant is calculate at the given temperature
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Chemistry: Atoms First V1
- Calculate the value of E for each of the following reactions. Decide whether each is product-favored at equilibrium in the direction written. [Reaction (d) is carried out in basic solution.] (a) Br2() + Mg(s) Mg2+(aq) + 2 Br(aq) (b) Zn2+(aq) + Mg(s) Zn(s) + Mg2+(aq) (c) Sn2+(aq) + 2 Ag+(aq) Sn4+(aq) + 2Ag(s) (d) 2 Zn(s) + O2(g) + 2 H2O() + 4 OH(aq) 2[Zn(OH)4]2(aq)arrow_forwardHow is the pH scale defined? What range of pH values corresponds to acidic solutions? What range corresponds to basic solutions? Why is pH = 7.00 considered neutral? When the pH of a solution changes by one unit, by what factor does the hydrogen ion concentration change in the solution? How is pOH defined? How arc pH and pOH for a given solution related? Explain.arrow_forwardCalculate the standard cell potential of the cell corresponding to the oxidation of oxalic acid, H2C2O4, by permanganate ion. MnO4. 5H2C2O4(aq)+2MnO4(aq)+6H+(aq)10CO2(g)+2Mn2+(aq)+8H2O(l) See Appendix C for free energies of formation: Gf for H2C2O4(aq) is 698 kJ.arrow_forward
- A typical total phosphate concentration in a cell, [HPO42] + [H2PO4], is 2.0 102 M. What are the concentrations of HPO42 and HPO4 at pH 7.40?arrow_forwardWhat is the standard cell potential you would obtain from a cell at 25C using an electrode in which I(aq) is in contact with I2(s) and an electrode in which a chromium strip dips into a solution of Cr3(aq)?arrow_forwardWhat is the cell potential (Ecell) of a spontaneous cell that is run at 25C and contains [Cr3+] = 0.10 M and [Ag+] = 1.0 104 M?arrow_forward
- Calculate G0 for the reaction Al3+ + 3Fe2+ ⇄ Al0+ + 3Fe3+arrow_forwardCalculate the value of AGn for the following reaction at 280 K. Ką= 2.9 × 10-8 and assume Ka does not change significantly with temperature. HC1O (aq) + H,0(1) clo (ag) + H,0*(aq) kJ/molarrow_forwardGiven that K = 2.9 x 109 for the following reaction, Zn2+(aq) + 4 NH3(aq) ⇆ Zn(NH3)42+(aq) what is the value of the equilibrium constant for the reverse reaction?arrow_forward
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