Question

1. Cl 2 + H2 =2 HCl
n moli Cl2=?
md=71g

2.N moli H2 =?
md=2

3.C%=?
md=100g
ms=1000g

4.P%=?
mpur=100g
mimpur =10g

DAU COROANA!!! Va roggg. ​

Answer 1

Răspuns:

1. Cl 2 + H2 =2 HCl

md=71g

n moli Cl2=?

MCl2=2×35,5=71g/mol

n=m/M=71/71=1 mol Cl2

2. N moli H2 =?

md=2

MH2=2×1=2g/mol

n=m/M=2/2=1 mol H2

3. C%=?

md=100g

ms=1000g

C=md×100/ms=100×100/1000=10%

4. P%=?

mpur=100g

mimpur =10g

P=mp×100/mi=100×100/10=1000g

Explicație: