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Period 3 and their oxides

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Total cards: 7•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (7)

#1
Front (Question)

Out of P4O10 and SO2 which is hgiher BP

Back (Answer)

P4O10 is a bigger molecule so has stronger VDW BETWEEN molecules

#2
Front (Question)

Whats got a higher MP/BP Na2O or MgO Na2O or Al2O3 P4O10 or SO3

Back (Answer)

MgO Na2O P4O10

#3
Front (Question)

pH of H2SO3 pH of H2SO4 Salt of H2SO3

Back (Answer)

2-3 0-1 SO3 + H2O–> H+ + HSO3-

#4
Front (Question)

How many double bonds in H3PO4 and what shaoe is it

Back (Answer)

One oduble bond P=O Tetrahedral

#5
Front (Question)

Why is SiO2 insoluble

Back (Answer)

Strong covalent bonds

#6
Front (Question)

How do you test for SO2 (H2SO3) and SO3 (H2SO4) Using universal indicator Using pH (pH meter) Using sodium carbonate

Back (Answer)

SO2 - Orange to red colour SO2 pH- 2-3 SO2 - Slower effervesence SO3 - Red colour SO3- pH- 0-1 SO3- Faster effervesence

#7
Front (Question)

Reactions for CaO + SO2 NaOH + SiO2 2KOH + SO3 Al2O3 + 3H2SO4

Back (Answer)

CaSO3 Na2SiO3 + H2O K2SO4 + H2O Al2(SO4)3