# Describe What Happens with Each Chemical Or State 'No Visible Reaction'. - Chemistry

Short Note

One chemical test that would enable you to distinguish between the following pair of chemicals. Describe what happens with each chemical or state 'no visible reaction'.
Calcium nitrate solution and zinc nitrate solution.

#### Solution

Zinc nitrate solution from calcium nitrate solution :
a. $\ce{ZnNO3 + 2NaOH ->\underset{\text{White gelatinous ppt.}}{Zn(OH)2 + NaNO3}}$

On further addi tion of NaOH, Zn(OH)2 dissolves.
b. $\ce{Ca(NO3)2 + 2NaOH ->\underset{\text{White ppt.}}{Ca(OH)2} + 2NaNO3}$

Ca(OH)2 precipitates are sparingly soluble in excess of sodium hydroxide.

Concept: On Solution of Salts - Colour of Salt and Its Solution
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#### APPEARS IN

Frank ICSE Class 10 Chemistry Part 2
Chapter 4 Analytical Chemistry
Exercise | Q 1.3 | Page 88