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Chemistry, 29.07.2021 18:20 maxstmichel3868
Tiến hành thí nghiệm: đổ 25ml dung dịch H2SO4 1M vào 25ml dung dịch chứa Na2S2O3 1M sau một lát trong bình xảy ra phản ứng: H2SO4 + Na2S2O3 → S↓+ SO2 + Na2SO4+ H2O Kết luận nào sau đây Không đúng: A. Nếu đun nóng bình phản ứng trong thí nghiệm trên thì phản ứng xảy ra nhanh hơn B. Nếu thay Na2S2O3 bằng BaCl2 thì có kết tủa trắng xuất hiện. C. Dung dịch sau phản ứng bị vẩn đục màu vàng. D. Nếu thêm 10ml H2O vào bình phản ứng trong thí nghiệm trên thì kết tủa xuất hiện nhanh hơn
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Tiến hành thí nghiệm: đổ 25ml dung dịch H2SO4 1M vào 25ml dung dịch chứa Na2S2O3 1M sau một lát tron...
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