(Zn, Mg, Cu, Ag, CuSO4 solution, MgSO4 solution) Consider the metals and the solutions given in the box .(a)Which of the above metals are to be selected to construct a Galvanic Cell ? (b) Identify the anode and cathode of the cell . ( Hint : Reactivity Order Mg > Zn> Cu > Ag ) © Write the redox reaction taking place in this cell .

answer: c.

explanation:

it's all four options.

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol