Let’s say that you have a solvatochromic compound that appears red in a solvent. You dissolve the compound in another solvent an
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The given equation is already balanced. We can use the stoichiometric ratio given by the equation to find how many moles of KNO3 are produced. According to the equation, for every mole of Pb(NO3)2, 2 moles of KNO3 are produced.
It means that 194moles of KNO3 are produced.
Answer:
= +ve, reaction is spontaneous
= -ve, reaction is non spontaneous
= 0, reaction is in equilibrium
Case 1: when copper metal is combined with aqueous zinc sulfate.
Here copper is undergoing oxidation ad thus acts as anode and zinc is undergoing reduction , thus acts as cathode.
= standard electrode potential =
Where both are standard reduction potentials.
Thus as is negative , the reaction is non spontaneous.
Case 2: when zinc metal and aqueous copper sulfate solution are combined.
Here zinc is undergoing oxidation ad thus acts as anode and copper is undergoing reduction , thus acts as cathode.
= standard electrode potential =
Where both are standard reduction potentials.
Thus as is positive , the reaction is spontaneous.