两种盐和冰组成的冷却剂
Refrigerants Composed by Two Kinds of Salt and Ice
实验中混合指定量的两种盐和100
g 冰,温度可以下降△t(℃),从而实现冷却目的。但其中的两种盐和冰必须以细碎状混合,以达到最佳冷却效果。
两种盐和冰组成的冷却剂
Refrigerants Composed by Two Kinds of Salt and Ice
序号(No.) |
盐混合物质量配比 (Proportioning by mass of salt mixture) |
△t/℃ |
1 |
NH4NO3(41.6g)
+ NaCl(41.6g) |
40.0 |
2 |
NH4SCN(39.5g)
+ NaNO3(55.4g) |
37.4 |
3 |
KNO3(2.0g)
+ KSCN(112.0g) |
34.1 |
4 |
KNO3(38.0g)
+ NH4Cl(13.0g) |
31.0 |
5 |
NH4Cl(13.0g)
+ NaNO3(37.5g) |
30.7 |
6 |
NH4Cl(20.0g)
+ NaCl(40.0g) |
30.0 |
7 |
NH4SCN(67.0g)
+ KNO3(9.0g) |
28.2 |
8 |
NH4NO3
(52.0g) + NaNO3(55.0g) |
25.8 |
9 |
KNO3(9.0g)
+ NH4NO3(74.0g) |
25.0 |
10 |
NH4Cl(12.0g)
+ (NH4)2SO4(50.5g) |
22.5 |
11 |
NH4Cl(18.8g)
+ NH4NO3(44.0g) |
22.1 |
12 |
NaNO3(62.0g)
+ (NH4)2SO4(69.0g) |
20.0 |
13 |
NaNO3(62.0g)
+ KNO3(10.7g) |
19.4 |
14 |
KCl(12.0g)
+ NH4Cl(19.4g) |
18.0 |
15 |
KNO3(13.5g)
+ NH4Cl(26.0g) |
17.8 |
16 |
KCl(24.5g)
+ KNO3(4.5g) |
11.8 |
17 |
Na2SO4·10H2O(9.6g) +
(NH4)2SO4(69.0g) |
20.0 |