2.1Медный купорос и его свойства. Сульфат меди(I)

2.1Медный купорос и его свойства. Сульфат меди(I)

Сульфат меди(I) можно получить при 200 °C по реакции:

$2Cu+2H_{2}S{O}_4\to C{u}_{2}S{O}_4+S{O}_2\uparrow +2H_{2}O$

Также можно получить в 4 стадии из оксида меди (II):

CuO + 2HCl → CuCl2 + H2O

2CuCl2 + 4NaI → 2CuI↓ + I2↓ + 4NaCl

2CuI + 2NaOH(горяч., конц.) → Cu2O↓ + 2NaI + H2O

Cu2O + (CH3)2SO4 → Cu2SO4 + (CH3)2O

Эта соль устойчива только в сухом воздухе, во влажном она разлагается на сульфат меди(II) и металлическую медь. Также происходит её разложение при попытке растворить её в воде.

Это статья-заготовка о неорганическом веществе . Вы можете помочь проекту, дополнив эту статью, как и любую другую в Википедии. Нажмите и узнайте подробности .

C. History of C language

The base or father of programming languages is ‘ALGOL.’ It was first introduced in 1960. ‘ALGOL’ was used on a large basis in European countries. ‘ALGOL’ introduced the concept of structured programming to the developer community. In 1967, a new computer programming language was announced called as ‘BCPL’ which stands for Basic Combined Programming Language. BCPL was designed and developed by Martin Richards, especially for writing system software. This was the era of programming languages. Just after three years, in 1970 a new programming language called ‘B’ was introduced by Ken Thompson that contained multiple features of ‘BCPL.’ This programming language was created using UNIX operating system at AT&T and Bell Laboratories. Both the ‘BCPL’ and ‘B’ were system programming languages.

In 1972, a great computer scientist Dennis Ritchie created a new programming language called ‘C’ at the Bell Laboratories. It was created from ‘ALGOL’, ‘BCPL’ and ‘B’ programming languages. ‘C’ programming language contains all the features of these languages and many more additional concepts that make it unique from other languages.

‘C’ is a powerful programming language which is strongly associated with the UNIX operating system. Even most of the UNIX operating system is coded in ‘C’. Initially ‘C’ programming was limited to the UNIX operating system, but as it started spreading around the world, it became commercial, and many compilers were released for cross-platform systems. Today ‘C’ runs under a variety of operating systems and hardware platforms. As it started evolving many different versions of the language were released. At times it became difficult for the developers to keep up with the latest version as the systems were running under the older versions. To assure that ‘C’ language will remain standard, American National Standards Institute (ANSI) defined a commercial standard for ‘C’ language in 1989. Later, it was approved by the International Standards Organization (ISO) in 1990. ‘C’ programming language is also called as ‘ANSI C’.

Languages such as C++/Java are developed from ‘C’. These languages are widely used in various technologies. Thus, ‘C’ forms a base for many other languages that are currently in use.

C Basic Commands

Following are the basic commands in C programming language: