एन एलिमेंट विद ऑक्सीजन टो फॉर्म ए ऑक्साइड विच डिसोल्व इन वॉटर ड्रॉप ऑक्साइड फ्रॉम रेड लिटमस सॉल्यूशन ऑफ रेड लिटमस ब्लू इज द एलिमेंट एक्सप्लेन विद एग्जांपल
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Since the oxide turns red litmus blue, therefore X is a metal because it is an alkaline oxide.
Most of the metals form respective metal oxides when react with oxygen.
Metal + Oxygen → metal oxide
Examples: (1) Reaction of potassium with oxygen:- Potassium metal forms potassium oxide when reacts with oxygen.
4K+O
2
→2K
2
O
(2) Reaction of sodium with oxygen:- Sodium metal forms sodium oxide when reacts with oxygen.
4Na+O
2
→2Na
2
O
Most metal oxides are insoluble in water but some of these dissolve in water to form alkalis. Sodium oxide and potassium oxide dissolve in water to produce alkalis.
Na
2
O(s)+H
2
O(l)→2NaOH(aq)
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