Plaster of Paris should be stored in a moisture-proof container. Explain why ?

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2. Acids, Bases and Salts

medium

Plaster of Paris should be stored in a moisture-proof container. Explain why ?

Option A

Option B

Option C

Option D

Solution

Plaster of Paris $(POP)$ should be stored in a moisture-proof container because Plaster of Paris, a powdery mass, absorbs water (moisture) to form a hard solid known as gypsum.

$\underset{(POP)}{\mathop{CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O}}\,\,+1\,\frac{1}{2}{{H}_{2}}O\,\to \,\underset{Gypsum\,\,(Hard\,\,solid)}{\mathop{CaS{{O}_{4}}.2{{H}_{2}}O}}\,$

Standard 10

Science

Equal lengths of magnesium ribbons are taken in test tubes $A$ and $B$. Hydrochloric acid $(HCl)$ is added to test tube $A$, while acetic acid $(CH_3COOH)$ is added to test tube $B$. Amount and concentration taken for both the acids are same. In which test tube will the fizzing occur more vigorously and why ?

medium

You have two solutions, $A$ and $B$. The $pH$ of solution $A$ is $6$ and $pH$ of solution $B$ is $8$. Which solution has more hydrogen ion concentration Which of this is acidic and which one is basic?

medium

A solution reacts with crushed egg-shells to give a gas that turns lime water milky. The solution contains

easy

Do basic solutions also have $H^+_{(aq)}$ ions ? If yes, then why are these basic ?

easy

Write word equations and then balanced equations for the reaction taking place when –

$(a)$ dilute sulphuric acid reacts with aluminium powder.

$(b)$ dilute hydrochloric acid reacts with iron filings.

medium

Plaster of Paris should be stored in a moisture-proof container. Explain why ?

Solution

Similar Questions

You have two solutions, $A$ and $B$. The $pH$ of solution $A$ is $6$ and $pH$ of solution $B$ is $8$. Which solution has more hydrogen ion concentration Which of this is acidic and which one is basic?

A solution reacts with crushed egg-shells to give a gas that turns lime water milky. The solution contains

Do basic solutions also have $H^+_{(aq)}$ ions ? If yes, then why are these basic ?

Write word equations and then balanced equations for the reaction taking place when – $(a)$ dilute sulphuric acid reacts with aluminium powder. $(b)$ dilute hydrochloric acid reacts with iron filings.

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Write word equations and then balanced equations for the reaction taking place when –

$(a)$ dilute sulphuric acid reacts with aluminium powder.

$(b)$ dilute hydrochloric acid reacts with iron filings.