Question

Calculati masa de Na si masa de Cl2 care reactioneaza pentru a obtine 940g clorura de natriu. Se dau: ANa = 23, ACl = 35.5 ​

Answer 1

Răspuns:

MNa=23g/mol

MCl2=2×35,5=71g/mol

MNaCl=23+35,5=58,5g/mol

2×23g........71g..........2×58,5g

2Na + Cl2 => 2NaCl

xg............... yg...........940g

x=940×2×23/2×58,5=calculează

y= 940×71/2×58,5= calculează