Question
Table 4 cline ( 2 - 5 ) multicolumn(1)(c|)(} & multicolumn{3)(c|)( Metal sulfate solution ) Metal & A sulfate & B sulfate & C sulfate & D sulfate A & times & times & checkmark & times B & checkmark & times & checkmark & times C & times & times & times & times D & checkmark & checkmark & checkmark & times checkmark shows that a displacement reaction took place times shows that a displacement reaction did not take place. Write metals A, B, C and D in order of reactivity. Give a reason for your order of reactivity. Most reactive qquad qquad qquad Least reactive qquad qquad Reason qquad qquad
Answer
4
(247 Votes)
Xander
Professional · Tutor for 6 years
Answer
Most Reactive: D : B : ALeast Reactive: CReason: D is the most reactive because it can displace all the other metals from their salt solutions. B displaces A and C from their salt solutions hence is less reactive than D but more than A. A can only displace C hence is less reactive than B and more than C. C is least reactive as it does not displace any other metal from its salt solution.
Explanation
## Step1:Like in a classic reactivity series, a displacing (more reactive) metal knocks out other metals from their compounds/salt. With consideration to that, we start by studying each row carefully, where reactions occur (tickemarks) or do not occur (crossmarks).## Step 2:Metals A, B, C and D are reacted one by one with sulphates of A, B, C, D metals in rows. - From the Shaded Row A, only displacement occurs with C hence C is less reactive than A. We denote this as : A > C- From the Shaded Row B, B displaces A and C hence, more reactive, denoted as: B> A, C- Shaded row C doesn't show displacement reaction at all, while row D shows displacement reaction with all hence we get C A > C < D**This indicates 1. D is the most reactive of all; it displace every other metal.2. C doesn't displace any other, thus least reactive. 3. B only displaces A and C because A is less reactive, and C is the least reactive.4. A happens to be more reactive than C since it displaces C.