NEET Test Series from KOTA - 10 Papers In MS WORD
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ELECTROCHEMISTRY
20079
\({E^0} = \frac{{RT}}{{nF}}\) In \({K_{eq}}\). This is called
1 Gibb's equation
2 Gibb's-Helmholtz equation
3 Nernst's equation
4 Vander Waal's equation
Explanation:
(c)Actually the equation is derived from Nerst equation assuming equilibrium condition in a cell reaction, when \(E = 0\).
ELECTROCHEMISTRY
20080
Four alkali metals \(A, B, C \) and \(D\) are having respectively standard electrode potential as \( -3.05,-1.66,-0.40\) and \(0.80\). Which one will be the most reactive
1 \(A\)
2 \(B\)
3 \(C\)
4 \(D\)
Explanation:
(a)More negative is the standard reduction potential, greater is the tendency to lose electrons and hence greater reactivity.
ELECTROCHEMISTRY
20081
Which one of the following metals cannot evolve \({H_2}\)from acids or \({H_2}O\) or from its compounds
1 \(Hg\)
2 \(Al\)
3 \(Pb\)
4 \(Fe\)
Explanation:
(a)\(Hg\) has greater reduction potential than that of \({H^ + }\)and hence cannot displace hydrogen from acid.
ELECTROCHEMISTRY
20082
Which one of the following reaction is not possible
20079
\({E^0} = \frac{{RT}}{{nF}}\) In \({K_{eq}}\). This is called
1 Gibb's equation
2 Gibb's-Helmholtz equation
3 Nernst's equation
4 Vander Waal's equation
Explanation:
(c)Actually the equation is derived from Nerst equation assuming equilibrium condition in a cell reaction, when \(E = 0\).
ELECTROCHEMISTRY
20080
Four alkali metals \(A, B, C \) and \(D\) are having respectively standard electrode potential as \( -3.05,-1.66,-0.40\) and \(0.80\). Which one will be the most reactive
1 \(A\)
2 \(B\)
3 \(C\)
4 \(D\)
Explanation:
(a)More negative is the standard reduction potential, greater is the tendency to lose electrons and hence greater reactivity.
ELECTROCHEMISTRY
20081
Which one of the following metals cannot evolve \({H_2}\)from acids or \({H_2}O\) or from its compounds
1 \(Hg\)
2 \(Al\)
3 \(Pb\)
4 \(Fe\)
Explanation:
(a)\(Hg\) has greater reduction potential than that of \({H^ + }\)and hence cannot displace hydrogen from acid.
ELECTROCHEMISTRY
20082
Which one of the following reaction is not possible
20079
\({E^0} = \frac{{RT}}{{nF}}\) In \({K_{eq}}\). This is called
1 Gibb's equation
2 Gibb's-Helmholtz equation
3 Nernst's equation
4 Vander Waal's equation
Explanation:
(c)Actually the equation is derived from Nerst equation assuming equilibrium condition in a cell reaction, when \(E = 0\).
ELECTROCHEMISTRY
20080
Four alkali metals \(A, B, C \) and \(D\) are having respectively standard electrode potential as \( -3.05,-1.66,-0.40\) and \(0.80\). Which one will be the most reactive
1 \(A\)
2 \(B\)
3 \(C\)
4 \(D\)
Explanation:
(a)More negative is the standard reduction potential, greater is the tendency to lose electrons and hence greater reactivity.
ELECTROCHEMISTRY
20081
Which one of the following metals cannot evolve \({H_2}\)from acids or \({H_2}O\) or from its compounds
1 \(Hg\)
2 \(Al\)
3 \(Pb\)
4 \(Fe\)
Explanation:
(a)\(Hg\) has greater reduction potential than that of \({H^ + }\)and hence cannot displace hydrogen from acid.
ELECTROCHEMISTRY
20082
Which one of the following reaction is not possible
20079
\({E^0} = \frac{{RT}}{{nF}}\) In \({K_{eq}}\). This is called
1 Gibb's equation
2 Gibb's-Helmholtz equation
3 Nernst's equation
4 Vander Waal's equation
Explanation:
(c)Actually the equation is derived from Nerst equation assuming equilibrium condition in a cell reaction, when \(E = 0\).
ELECTROCHEMISTRY
20080
Four alkali metals \(A, B, C \) and \(D\) are having respectively standard electrode potential as \( -3.05,-1.66,-0.40\) and \(0.80\). Which one will be the most reactive
1 \(A\)
2 \(B\)
3 \(C\)
4 \(D\)
Explanation:
(a)More negative is the standard reduction potential, greater is the tendency to lose electrons and hence greater reactivity.
ELECTROCHEMISTRY
20081
Which one of the following metals cannot evolve \({H_2}\)from acids or \({H_2}O\) or from its compounds
1 \(Hg\)
2 \(Al\)
3 \(Pb\)
4 \(Fe\)
Explanation:
(a)\(Hg\) has greater reduction potential than that of \({H^ + }\)and hence cannot displace hydrogen from acid.
ELECTROCHEMISTRY
20082
Which one of the following reaction is not possible
