Arrange thhese solution in order of decreasing acidity.a)0.1M NaOH b)0.1M HCL c)0.1Mchloride d) 0.1M sodium ethanoate?
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The decreasing order of pH is IV>I>III>II>V
Sodium hydroxide is the strong base. Its solution will be highly alkaline.
Hence, it will have maximum pH.
HCl is a strong acid.
Its solution will be highly acidic.
It will have minimum pH.
Formic acid is a weak acid. Its pH will be higher than that of HCl.
pH of sodium acetate will be higher than the pH of ammonium acetate as sodium acetate is a salt of weak acid with strong base sodium hydroxide and ammonium acetate is a salt of weak acid with weak base ammonia.
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