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Safari File Edit View History Bookmarks Window Help ezto.mheducation.com mcgraw hill connect-Yahoo Search Results Yahoc mybama-Yahoo Search Resu'ts Yahoo Search Resuits Be sure to answer all parts. Determine whether each salt forms an acidic, basic, or neutral solution when it dissolves in water a. Nal acidic basic acidic e. MgBr neutral TABLE 9.1Relative Strength of Acids and Their Conjugate Bases Conjugate Bave Strong Acids lBydrokodic acid HBe Bromide ie Nitrc aci INO NO Weak Acids Phosphonc acid HF Aoctic acid Heo NH ICN HOO Cyanide oe

Explanation / Answer

Nature of aqueous solution of any salt is decided by the nature of acids and bases formed on dissolving the salt in water.

1.Solution of a salt which gives a strong acid and a strong base on dissolution in water is always neural.

2.Solution of a salt which gives a strong acid and a weak base on dissolution in water is always acidic.

3.Solution of a salt which gives a strong base and a weak acid on dissolution in water is always basic.

Now let come on question

(1)NaI

When NaI is dissolved in water,it gives NaOH (a strong base) and HI (a strong acid).So it's aqueous solution should be neutral.

Explanation: This is because NaOH being a strong base provides more OH-ions which are completely neutralized by excess of H+ provided by strong acid HI.

NaI + H2O -----------> NaOH + HI

(2)Mg(Br)2

In aqueous solution this salt gives HBr (a strong acid) and Mg(OH)2 (a base but not enough strong to completely neutralize H+ given by HBr).So, its aqueous solution is acidic.

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