某一反应体系有反应物和生成物共五种物质: O 2 、 H 2 CrO 4 、 Cr(OH) 3 、 H 2 O 、 H 2 O 2 已知该反应中 H 2 O 2 只发生如下过程: H 2 O 2 → O 2 ( 1 )该反应中的还原剂是 ____________ 。 ( 2 )该反应中,发生还原反应的过程是 __________→ __________ 。
【单选题】A chain of shops in East Yorkshire, England has been told that it would be a criminal offence to sell thousands of tubes of toothpaste made by a leading French manufacturer simply because the small pr...