Hi there!
The answer is no.
Although the real answer depends on what the pebble is composed of (since different materials produce different effects), most pebbles don't dissolve in water.
Hope this helps!
The smell, the color change , change in temperature, it bubbles and it turns into a solid
Note that we are omitting the water.
So, sodium carbonate will basically dissociate into positive sodium ions and negative carbonate ions based on the following equation:
<span>Na2CO3 → 2 Na(+) + CO3(2-)
</span>
If we took water into consideration:
Sodium carbonate will dissociate in water forming carbonic acid and sodium hydroxide. Since sodium hydroxide is a strong base, therefore, it will then neutralize the gastric acid, thus, acting as an antacid.
The answer is (4) Cu(OH)2. The valence of Cu ion is 2 positive. The valence of hydroxide(OH-) is one negative. So to balance the compound, the formula should be Cu(OH)2.