Science, asked by anjali8310, 9 months ago

which of the following pair of compounds undergo displacement reaction when they react with each other .
• cu and AgNO3
• Ag and FeSO4
• Cu and NaCl
• Mg and NaCl
Please help me in solving this problem . please give the right answer.

Answers

Answered by Anonymous
51

Cu + 2AgNO3 → Cu(NO3)2 + 2Ag

Displacement Reaction

In above reaction, Cu is more reactive than Ag due to this it displaces Ag from AgNO3 and formation of Cu(NO3)2 and Ag takes place.

When a more reactive element displaces less reactive from it's salt solution or from it's compound is known as Displacement Reaction.

Therefore, Cu and AgNO3 shows displacement reaction.

Series of metals in the decreasing order is known as Reactivity series.

K = Potassium

Na = Sodium

Ca = Calcium

Mg = Magnesium

Al = Aluminum

Zn = Zinc

Fe = Iron

Pb = Lead

H = Hydrogen

Cu = Copper

Hg = Mercury

Ag = Silver

Au = Gold

(Reactivity decreases down the group. Means, Potassium is most reactive metal and Gold is least reactive. )

Answered by Anonymous
44

 \green{  \bold{ \underline{ \underline{\:QUESTION:-}}}}

Which of the following pair of compounds undergo displacement reaction when they react with each other?

Cu \: and \: AgNO_3  \\ Ag \: and \: FeSO_4 \\ Cu \: and \: NaCl \\ Mg \: and \: NaCl\\\\

\blue{ \bold{ \underline{ \underline { \: ANSWER:-}}}}\\

 \red{ \underline{ Copper \: metal \: (Cu) \:   and \: Silver \: Nitrate \: solution \: (AgNO_3) \: }} \\  \\  { \pink{  \bold \: { \underline{ \overline{ \: Explanation}}}}}  \\ Cu + 2AgNO_3 =  > Cu(NO_3)_2 + 2Ag\\\\

\huge{\purple{Step\: by \:Step\: Explanation}}\\

✝️What is displacement reaction:-

It is a chemical change in which more active (reactive) element displaces less active element from its salt solution.

♦For Example:-

 \orange{CuSO_4 + Zn  =>ZnSO_4 + Cu} \\

Here it is noticed that zinc is more active (reactive) than copper so it displaces copper from its salt solution i.e., Cupper sulphate (CuSO_{3})\\

 \orange{Mg + H_{2}SO_{4} => MgSO_4 + H_2} \\

Here it is noticed that magnesium is more active as compared to hydrogen, so it displaces hydrogen from the dilute sulphuric acid (H_{2}SO_{4})\\\\

✅ADDITIONAL INFORMATION:-

 \boxed{ \bold{ \red{ \mid{ Reactivity \: of \: elements}}}}\\

\begin{tabular}{c | 1}</p><p>  METALS &amp; NON METALS\\</p><p>\cline{1-2}</p><p>        Potassium K &amp; Fluorine F\\</p><p>        Sodium Na &amp; Chlorine Cl\\</p><p>        Calcium Ca &amp; Oxygen O\\</p><p>        Magnesium Mg &amp; Bromine Br\\</p><p>        Aluminum Al &amp; Iodine I\\</p><p>        Zinc Zn &amp; Sulphur S\\</p><p>        Iron Fe &amp; Phosphorus P\\</p><p>        Lead Pb &amp; \\</p><p>        Hydrogen H &amp; \\</p><p>        Copper Cu &amp; \\</p><p>        Mercury Hg &amp; \\</p><p>        Silver Ag &amp; \\</p><p>        Gold Au &amp; \\</p><p>        Platinum &amp; \\</p><p>\end{tabular}

⏩Note:-

Metals which are above hydrogen are most active metals and which are below hydrogen are less active metals.

on the other hand fluorine is most reactive non metal and iodine is least reactive non metal.

✏️Reactivity decreases downwards.

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