Page 2 - 2. Lesson note - Ch-3 Concept mapping

2. Water Metal + H2O → MO/MOH + H2 nM + H2O → No Change
(
Eg- Na + H2O → NaOH + H2 ason- Non metals being acceptors
e
R
Eg. Zn + H2O → ZnO + H2 of electrons, cannot supply the
Eg- Cu + H2O → No Change. required electrons to reduce the [H+]
(K,Na,Ca,Mg- form MOH as their oxides ion of water /Acid.)
dissolve in water.) All other metals above
[H] in the reactivity series form metal
oxides.
n
3. Dilute Acids Metal + Acid → Salt + H2 M + Acid → No Change
(Metals below [H] in the reactivity series (Reason as above)
do not react with acids to liberate H2 gas.)
(Reason- metals below [H] in the reactivity
series, being less reactive, cannot supply
electrons to reduce the [H+] ions.)
Reactivity Series-

K- Potassium
Na- Sodium

Ca- Calcium Most reactive
Mg- Magnesium
Al- Aluminium

Zn- Zinc Reactivity decreases
Fe -Iron
Pb- Lead
H -Hydrogen

Cu- Copper
Hg- Mercury Less reactive
Ag- Silver

Au -Gold Least reactive

C] Bonding-

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