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Chemistry > Metals nd non - Rxn of dilute acid + metal > Flashcards

Metals nd non - Rxn of dilute acid + metal Flashcards

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1
Q

Wht is formed aftr metal reacts wid acid

A

metal salt + hydrogen gas (H2)

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2
Q

Metals displace ………. in acids

A

Hydrogen

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3
Q

Do all metals displace hydrogen in acids?

A

Most do, only the ones above hydrogen in the reactivity series

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4
Q

Which metals dont displace hydrogen in acids?

A

Cu, Ag, Au ——–> no rxn

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5
Q

metal + acid —->

A

metal + acid —-> metal salt + H2

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6
Q

Metal + HCL ———>

A

metal chloride + h2

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7
Q

Rxn of HCL wid Sodium

A

2Na + 2Hcl ——-> 2NaCl + H2

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8
Q

Rxn of HCL wid Sodium is what in nature

A

Violent rxn

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9
Q

Sodium is?

A

most reactive

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10
Q

Sodium chloride has which no. in formula?

A

No number, NaCl only have to balance the eqn tho

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11
Q

Rxn of HCL wid Magnesium

A

Mg + 2HCL ——-> MgCl2 + h2

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12
Q

Rxn of HCL wid Magnesium is what in nature?

A

Reacts quite violently

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13
Q

Mg is?

A

less reactive than Na

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14
Q

Magnesium chloride has which no. in the formula?

A

2 -> MgCl2

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15
Q

Specialty of rxn of acid + Al

A

At first the rxn is slow bcs of the thin but tough protected layer of al oxide but later when the acid dissolves this layer fresh Al reacts rapidly wid acid

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16
Q

Rxn of HCL wid Al

A

2Al + 6HCL —–> 2 AlCl3 + 3 H2

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17
Q

Rxn of HCL wid Al is?

A

rapid after layer is dissolved

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18
Q

Which no. is in Aluminum chloride’s formula

A

3 -> AlCl3

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19
Q

Al is? (reactivity series point of view)

A

less reactive than mg

20
Q

Rxn of HCL wid Zn ———>

A

Zn + 2Hcl ——> ZnCl2 + H2

21
Q

Zn is? (reactivity series point of view)

A

Less reactive than Al

22
Q

Zinc chloride’s formula has which no.?

A

2 -> ZnCl2

23
Q

Rxn of HCL wid Fe

A

Fe + HCL ——> FeCl2 + H2

24
Q

FeCl2 is called?

A

Iron (II) Chloride

25
Q

Which no. is in Iron (II) Chloride’s no.?

A

2 -> FeCl2

26
Q

Rxn of cu wid Hcl

A

Cu + Hcl ——–> No rxn

27
Q

Which all metals dont react with acids (Hcl)

A

Cu, Ag, Au

28
Q

What sort of metals displace hydrogen frm dilute acids?

A

Only the metals more reactive than Hydrogen (metals above Hydrogen in the reactivity series) which are —–> The metals that give electrons more easily than Hydrogen are the ones that can actually displace Hydrogen

29
Q

How do metals displace hydrogen frm dilute acids?

A

The ones more reactive than Hydrogen give electrons out easily, these electrons reduce the H+ ion present in the acid turning to Hydrogen gas!

30
Q

Why Cu, Ag dont react wid Hydrogen nd displace it?

A

Bcs they dont give out electrons required for the reduction of hydrogen hence no ionization of H+ ions tkes place meaning no H2 gas will be produced

31
Q

metals …….. hydrogen in the reactivity series displace and metals ………. hydrogen in the reactivity series don’t displace

A

above —> displace

below —–> dont displace

32
Q

Metals with Sulfuric acid —>?

A

Metal + sulfuric acid —–> metal sulphate + h2 gas

33
Q

Sodium sulphate formula?

A

Na2SO4, no new no.s! na ka 2 lagega

34
Q

Magnesium sulfate formula?

A

MgSO4 -> no new no.s!

35
Q

Al sulfate formula?

A

Al2 (SO4)3 -> Al ka 2 and so4 pe () me 3

36
Q

Zn sulfate formula?

A

ZnSO4 -> no new!

37
Q

Fe sulfate formula?

A

FeSO4 -> no new!

38
Q

What is the specialty of rxn b/w metals and nitric acid?

A

No h2 gas is evolved

39
Q

Why no H2 gas is evolved in the rxn b/w metals and nitric acid?

A

Bcs Nitric acid = strong acid, so it oxidizes the hydrogen forming WATER!

40
Q

What else happens when nitric acid oxidizes hydrogen?

A

When it does so, nitric acid itself is reduced to any of the nitrogen oxides depending upon nature of metal, temp of rxn and concentration of our nitric acid!

41
Q

Exception in the specialty of nitric acid’s rxn wid metal?

A

HOWEVER! very dilute nitric acid + mg/mn —–> HYDROGEN GAS!!

42
Q

Why will h2 be produced if HNO3 reacts wid Mg/Mn

A

Bcs dilute HNO3 is a very weak oxidizing agent! hence it aint able to oxidize hydrogen to water

43
Q

Rxn b/w HNO3 nd Mg

A

Mg + HNO3 —–> Mg(NO3)2 + h2

44
Q

Magnesium nitrate ke formula me kya no. h?

A

No3 has () wala 2

45
Q

Rxn b/w HNO3 nd Mn

A

Mn + HNO3—> Mn(NO3)2 + h2

46
Q

Manganese nitrate ke formula me kya no. h?

A

No3 has () wala 2

Chemistry (14 decks)

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