First slide

Alkaline earth metals

Question

Which of the following pairs can be distinguished by the action of heat?

Moderate

A

${Na}_{2} {CO}_{3} and {CaCO}_{3}$
B

$K_{2} {CO}_{3} and {MgCO}_{3}$
C

$Ca {({NO}_{3})}_{2} and {NaNO}_{3}$
D

CaCO₃ and BaCO₃

Solution

$\begin{array}{l} {Na}_{2} {CO}_{3} \overset{Δ}{⟶} No reaction \\ {CaCO}_{3} \overset{Δ}{⟶} CaO + {CO}_{2} \\ K_{2} {CO}_{3} \overset{Δ}{⟶} No reaction \\ {MgCO}_{3} \overset{Δ}{⟶} MgO + {CO}_{2} \\ Ca {({NO}_{3})}_{2} \overset{Δ}{⟶} CaO + 2 {NO}_{2} + \frac{1}{2} O_{2} \\ {NaNO}_{3} \overset{Δ}{⟶} {NaNO}_{2} + \frac{1}{2} O_{2} \end{array}$
Both CaCO₃ and BaCO₃ liberates CO₂on heating. They can't be distinguished by heating

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App