Please explain : Chemical tests of four metals A, B, C, and D show the following
ID: 949499 • Letter: P
Question
Please explain : Chemical tests of four metals A, B, C, and D show the following results. (a) Only B and C react with 0.5 M HCl to give H2 gas. (b) When B is added to a solution containing the ions of the other metals, metallic A, C, and D are formed. (c) A reacts with 6 M HNO3 but D does not. Select which represents the metals arranged in decreasing order as reducing agents
C > D > A > B
B > C > A > D
B > C > D > A
C > D > B > A
D > A > B > C
D > A > C > B
C > D > A > B
B > C > A > D
B > C > D > A
C > D > B > A
D > A > B > C
D > A > C > B
Explanation / Answer
a) Only B and C react with 0.5 M HCl to give H2 gas
This implies that B and C are stronger reducing agents than A and D
b) When B is added to a solution containing the ions of the other metals, metallic A, C, and D are formed
Tha above statement implies that B reduces ionic A,C and D to metallic. Hence B is thestrongest reducing agent amongst all
c) A reacts with 6 M HNO3 but D does not
A is stronger reducing agent that D.
Therefore the Order would be,
B > C > A > D