search points attachment profile arrow left arrow right star heart verified symbols equation arrow-down question mark check menu accountancyadministrationagriculturalalgebraallarabicartart_musicbelarusbelarus_altbiologybusinesscatalachemistrychineseeconomicsegzamenglishentrepreneurshipenvironmentethicseuskarafirst_aidfrenchgalegogeographygeologygeometrygermangrammarhealthhistoryindia_langindonesian_langinformaticsitalianjapanesekazachkazach_altkoreanlanguagelatinlawlife_scienceliteraturelogicmathematicsmusicnigerian_langother_languagesotherspedagogicsphilosophyphysical_educationphysicspoliticspsychologyreligionrpa_langrussianrussian_altsciencesecurityskillssocial_sciencesociologyspanishstatisticstechnologytourismtrafficukrainianukrainian_altukrainian_literaturewos_civilisation accountancyadministrationagriculturalalgebraall_1arabicartart_music_2belarusbelarus_altbiologybusiness_2catalachemistry_1chineseeconomicsexam_3englishentrepreneurshipenvironment_2ethicseuskarasecurity_1frenchgalegogeography_4geology_4geometrygermangrammarhealthhistoryindia-langindonesian-langinformaticsitalianjapanesekazachAsset 230koreanlanguagelatinlawlife-scienceliteraturelogic_2mathematicsmusicnigerian-langotherlanguagesother_1pedagogicsphilosophyphysical_educationphysicspoliticspsychologyreligion_1rpa-langrussianrussian_altsciencesecurity_3_mskills_1allsocial_science_5_msociologyspanishstatisticstechnologytourismtrafficukrainianukrainian_altukrainian_literaturewos_civilisation
Автор - missborunova

K2Cr2O7+H2SO4+K2SO4=?.......
ПОМОГИТЕ РЕШИТЬ

Ответ

Проверено экспертом

Автор - Vikuska2001
K2Cr2O7+3K2SO3+4H2SO4= Cr2(SO4)3+4K2SO4+4H2O

2Cr(+6) +6e = 2Cr(+3)
S(+4)0-2e=S(+6)

Ответ

Автор - KhimikTj
В задаче ошибка. В продуктах реакции должно быть K2SO3.

ВОТ РЕШЕНИЕ;

K2Cr2O7+4H2SO4+3K2SO3= 4K2SO4+Cr(SO4)3+4H2O

Ответы и объяснения

По всем вопросам пишите на - vashurokk@rambler.ru
© 2025 Все права защищены