Leblanning “sulfat usuli” olishdagi moddalar ketma-ketligi qanday?
Poll
- NaCl->Na2SO3->Na2S->Na2CO3
- NaCl->Na2SO4->Na2S->Na2CO3
- Na2SO4->NaCl->Na2S->Na2CO3
- NaCl->Na2SO3->Na2S->Na2CO3