Fill in the blanks-a Salts of -normal - transition- elements are generally coloured- From the ions K 1- Cr 3- Fe 2- Ca 2- SO 32- MnO 41- NO 31- the ions generally coloured are b The hydroxide which is soluble in excess of NaOH is - Zn OH 2 - Fe OH 3 - Fe OH 2-c The salt which will not react with NH 4 OH solution - ZnCl 2 - CuCl 2 - NH 4 Cl - FeCl 2- -d The substance- s which react- s with hot conc- NaOH solution and undergoes a neutralization reaction - Al 2 O 3 - Al - Al OH 3-e To distinguish soluble salts of zinc and lead - NaOH - NH 4 OH - can be used-

(a) Salts of transition elements are generally coloured. From the ions K1+, Cr3+, Fe2+, Ca2+, SO32 minus;, MnO41 minus;, NO31 minus; nbsp;the ions gener ...

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Byju's Answer

Standard X

Chemistry

Ionic Salts and Their Characteristic

Fill in the b...

Question

Fill in the blanks:
(a) Salts of ____ [normal / transition] elements are generally coloured. From the ions K¹⁺, Cr³⁺, Fe²⁺, Ca²⁺, SO₃²⁻, MnO₄¹⁻, NO₃¹⁻ the ions generally coloured are _ .
(b) The hydroxide which is soluble in excess of NaOH is [Zn(OH)₂ / Fe(OH)₃ / Fe(OH)₂].
(c) The salt which will not react with NH₄OH solution [ZnCl₂ / CuCl₂ / NH₄Cl / FeCl₂].
(d) The substance/ s which react/ s with hot conc. NaOH solution and undergoes a neutralization reaction [Al₂O₃ / Al / Al(OH)₃].
(e) To distinguish soluble salts of zinc and lead _____ [NaOH / NH₄OH] can be used.

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Solution

(a) Salts of transition elements are generally coloured. From the ions K¹⁺, Cr³⁺, Fe²⁺, Ca²⁺, SO₃²⁻, MnO₄¹⁻, NO₃¹⁻ the ions generally coloured are Cr³⁺, Fe²⁺ and MnO₄^- .

(b) The hydroxide that is soluble in excess of NaOH is Zn(OH)₂.

(c) The salt that will not react with NH₄OH solution is NH₄Cl.

(d) The substance/s that react/s with hot concentrated NaOH solution and undergoes a neutralisation reaction is/are Al₂O₃ and Al(OH)₃.

(e) To distinguish soluble salts of zinc and lead NH₄OH can be used.

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