Question

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Answer 1

Răspuns:

NaOH + HCl---> NaCl + H2O

2KOH +H2SO4---> K2SO4+ 2H2O

Ca(OH)2+ 2HNO3----> Ca(NO3)2+2H2O

1mol..........1mol

NaOH + HCl----> NaCl+H2O

x................1mol

x= 1molNaOH

Explicație:

Answer 2

Răspuns:

5. NaOH +HCl => NaCl +H2O

2KOH +H2SO4 => K2SO4 +2H2O

Ca(OH)2+ 2HNO3 => Ca(NO3)2+2H2O

6.MHCl=1+35,5=36,5g/mol

a) 1mol HCl...............36,5g

0,5moliHCl..............xg

x=0,5×36,5/1=calculează

b) 1molHCl................36,5g

2moliHCl...............yg

y=2×36,5/1=calculează

c) 1molHCl..............36,5g

1molHCl....................zgN

z=36,5×1/36,5= calculează