Question

Is the aqueous solution of each of these salts acidic, basic, or neutral? (a) cr(no3)3 acidic basic neutral (b) nahs acidic basic neutral (c) zn(ch3coo)2 acidic basic neutral?

Answer 1

1) chromium(III) nitrate is acidic,  because it is the salt of weak base (chromium(III) hydroxide Cr(OH)₃) and strong acid (nitric acid HNO₃).
2) sodium hydrosulfide is basic, because it is the salt of strong base (sodium hydroxide MaOH) and weak acid (hydrogen sulfide H₂S).
3) zinc acetate is little basic, because zinc hydroxide (Zn(OH)₂) is stronger base than acetic acid (CH₃COOH).

Answer 2

Answer:

(a) Neutral.

(b) Basic.

(c) Basic.

Explanation:

Hello,

In this case, we must take a look of both the cation's and anion's nature, it means, if they come from a strong or weak acid or base, thus:

(a) Chromium (III) hydroxide is a strong base and nitric acid is a strong acid, consequently, chromium (III) nitrate is a neutral base since every ion is neutralized.

(b) Sodium hydroxide is a strong base and the hydrosulfuric acid is a weak acid, so there will be unreacted OH- ions, consequently, sodium hydrosulfide is a basic salt.

(c) Zinc hydroxide is a strong base and acetic acid is a weak acid, therefore, as in the previous salt, this is a basic salt.

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