${\mathrm{CuCO}}_3$(green) $\to$$\mathrm{CuO}$(black) +${\mathrm{CO}}_2$(g)

(a) What is the reaction type?

(b) Mention the physical state of the reactants and products.

Q. Physical states of reactants and products are mentioned while writing a chemical equation.

Q.

In which of the following reaction the physical state of the reactants or the product is not correctly represented?

Q. Consider the given statements

Statement - I: Physical states of all reactants and products are same in a heterogeneous reaction

Statement - II: Physical states of all reactants and products are different in a homogeneous reaction

Now, choose the correct option

Q.

(a) Describe the reaction of potassium with water. Write the equation of the reaction involved.
(b) Write an equation of the reaction of iron with steam, Indicate the physical state of all the reactants and products.
(c) Which gas is produced when dilute hydrochloric acid is added to a reactive metal?

Q. $N{H}_3\left(g\right)$ reacts with $CuO\left(s\right)$ according to the following reaction:
$3CuO\left(s\right)+2N{H}_3\left(g\right)\to 3Cu\left(s\right)+N_2\left(g\right)+3H_{2}O\left(l\right)$
Standard enthalpies of formation of $N{H}_3\left(g\right),CuO\left(s\right)$ and $H_{2}O\left(l\right)$ are $-46{\text{kJ mol}}^{-1},-155{\text{kJ mol}}^{-1},\text{and}-285{\text{kJ mol}}^{-1}$ respectively. The magnitude of heat liberated (in $\text{kJ}$) when $2.72\text{g}$ of $N{H}_3\left(g\right)$ is reacted completely with $CuO\left(s\right)$ according to the reaction given above when all the reactants and products are in their standard state is: