в степени окисления +2 хром проявляет основные свайства:
cro + h2o = cr(oh)2
сr(он)2 + н2sо4 = сrso4 + 2н2о
в степени окисления +3 хром амфотерен:
сr2o3 + h2o = cr(oh)3
cr2o3 +h2o = hcro2
сr2о3 + 6 кон + 3н2о = 2к3[сr(он)6]
сr2о3 + 6нсl = 2сrсl3 + 3н2о
в степени окисления +6 хром проявляет кислотные свойства:
сro3 + h2o = h2cro4
сrо3 + н2о =н2сr2о7
к2сr2о7 + 2кон = 2к2сrо4 + н2о
Winchester Art Gallery last Thursday evening? I was, and therefore had the pleasure of seeing the new (30) of Daniella Warner's EXHIBIT paintings.
Daniella Warner is not (31) yet - but she's FAME clearly an (32) who has a very bright future. ART All Daniella Warner's paintings – without (33) - are EXCEPT (34) She very often paints areas of outstanding IMAGINE (35) beauty, such as lakes and forests, but she makes NATURE them (36) lively places. Her paintings often focus on EXCITE the subjects of (37) and peace. It's certainly not easy to FREE be a (38) artist these days, but if anyone deserves it, SUCCESS Daniella Warner does. Daniella Warner's paintings will be on show at the Winchester Art Gallery until Saturday 25th March.