QuestionFebruary 10, 2026

Red litmus paper turning blue indicates the prescence of __ ? Ni(II) Ca(II) Fe(III) Ammonium Ion

Red litmus paper turning blue indicates the prescence of __ ? Ni(II) Ca(II) Fe(III) Ammonium Ion
Red litmus paper turning blue indicates the prescence of __ ? Ni(II) Ca(II) Fe(III) Ammonium Ion

Solution
4.2(276 votes)

Answer

Ammonium Ion Explanation 1. Identify chemical implication of red litmus turning blue Red litmus turning blue means the substance is basic (alkaline). 2. Determine which ion produces a basic solution Among the given options, ammonium ion (NH_4^+) is weakly acidic, not basic; Ni^{2+}, Ca^{2+}, and Fe^{3+} salts are neutral or acidic. None directly cause litmus change to blue, except ammonia (NH_3), formed from ammonium salts upon reaction with base, which is basic. The test indicates ammonia presence.

Explanation

1. Identify chemical implication of red litmus turning blue <br /> Red litmus turning blue means the substance is basic (alkaline). <br />2. Determine which ion produces a basic solution <br /> Among the given options, ammonium ion ($NH_4^+$) is weakly acidic, not basic; $Ni^{2+}$, $Ca^{2+}$, and $Fe^{3+}$ salts are neutral or acidic. None directly cause litmus change to blue, except ammonia ($NH_3$), formed from ammonium salts upon reaction with base, which is basic. The test indicates ammonia presence.
Click to rate:

Similar Questions