, . , - , ... , .
- () , , . , , . , , . , ( ) .
, .
. 5000/ (), 5000 / - ().
- , .
- , . , . , KNO3, Cl, KOH.
- , . , , , . .
( ) ( ).
. , , , - . :
| () | (, , , ) | ( ) |
| 100 | 1-100 | 1 |
, . , . , . , , . .
1. (ω) - . .
ω ()=m()/ m ()
, 100 .
2. () - . () , 1 . ). /. . , 2 (NaOH).
|
|
|
=n()/V
1/ = 1 ( 1 1 );
0,1 ;
0,01 ;
0,001 .
3. ( , N)- - , 1 .
N=n()/V
-/, N. , 0.1N HCL , 1 0,1- l.
4. () - , 1 , . :
= N/1000
.
1.
500 NaCl ω=10%.
| : m (NaCl)=500 ω (NaCl)=10% | ω =m 100%/ m 1. NaCl : m = ω m 100% m (NaCl)= 10%500 =50 100 2. : m = m + m m (H2O)= m - m m (H2O)=500-50=450. ρ= m/V, ρ- , m-, V- V(H2O)= m (H2O) = 450 =450 ρ (H2O) 1/ |
| : m (NaCl)=? m (H2O)=? |
: , 500 NaCl ω=10%, 50 NaCl, 450 , .
2.
250 0,5 CuSO4 CuSO4
| : C(CuSO4)=0,5 V (CuSO4)=0,25 | =n(CuSO4)/V CuSO4 n(CuSO4)= V, n(CuSO4)=0,5/0,25=0,125. (CuSO4)=160/ n=m/M, CuSO4 m (CuSO4)= n M=0,125 160/=20 |
| : m (CuSO4)=? |
: , 250 CuSO4 , 20 CuSO4, 250 .
