Which metal can displace hydrogen from dilute acids from the following data.
`E_(zn//zn^(2+))=-076V.E_(Cu//Cu^(2+))=0.343V`

A metal that cannot displace hydrogen from water is Ca K Cu Al

Which of the following metals cannot liberate hydrogen from dilute hydrochloric acid

Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

Calculate the potential of the following cell at 298 K Zn//Zn^(2+)(a=0.1)//Cu^(2+)(a=0.01)//Cu E_(Zn^(2+)//Zn)^(@)=-0.762V E_(Cu^(2+)//Cu)^(@)=+0.337V Compare the free energy change for this cell with the free enegy of the cell in the standard state.

Construct a cell using given electrodes at 298K and also calculate its standart EMF . Given : E^(c-)._(Zn|Zn^(2+))=0.76V E^(c-)._(Cu^(2+)|Cu)=0.34V

Write the nernst equation and calculate the emf of the following cell at 298K. Mg(s)//Mg^(+2)(0.001m)////Cu^(+2)(0.0001M)//Cu(s) Given E^(@)Mg^(+2)//Mg=-2.36V and E^(@)Cu^(+2)//Cu=+0.34 V.

Identify the strongest and weakest reducing agents from the following list : Zn,Cu,Ag,Na,Sn .

Aluminium displaces hydrogen from acid, but copper does not. A Galvanic cell prepared by combining Cu//Cu^(2+) and Al//Al^(3+) has an emf of 2.0V at 298K. If the potential of copper electrode is 0.34V, that of aluminium electrode is