Question

KClO3 -------> KCl + a
Mg + a ------> b
b + H2O ----> c
c + HCl -----> d + H2O
d + AgNO3 ------> e + Mg (NO3)2

a) a ... e = ? , ec x r × ch = ?
b) mKClO3 = 73,5 g
masa precipitat = ?

CONTINUARE PROBLEMEI, VĂ ROG !
VĂ MULȚUMESC ANTICIPAT !
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Answer 1

Răspuns:

2KClO3---> 2KCl + 3O2

2Mg +O2--->2MgO

MgO+ H2O---> Mg(OH)2

Mg(OH)2 + 2HCl---> MgCl2 + 2H2O

MgCl2 +2AgNO3----> 2AgCl↓ + Mg(NO3)2

M,KClO3=122,5g/mol

niu=m/M=73,5/122,5mol= 0,6mol KClO3

insumand reactiile date : 2molKClO3...3molO2....6molMgO...6molMgCl2...12molAgCl

0,6mol..................................................................................x

x=niu= 3,6molAgCl

M,AgCl= 143,5 g/mol

m= niuxM= 3,6X143,5G=516,6gAgCl

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