Chemical Equations

The chemical equation tells about the formation of precipitate in the reaction.

The chemical equation tells about the speed of the reaction.

Write the limitations of chemical equation.

Describe any three characteristics of chemical equation.

The balanced chemical equation for the reaction of Barium chloride with Aluminium sulphate solution is 

$2{\mathrm{BaCl}}_2+2\mathrm{Al}{\left({\mathrm{SO}}_4\right)}_3\to 3{\mathrm{BaSO}}_4\downarrow +2{\mathrm{AlCl}}_3$

String of ants, bees contain

Complete the following equation.

2KBr(aq)+BaCl₂(aq)$\rightarrow$_____(aq)+BaBr₂(aq)

Which of the following is not a balanced equation? 

ZnCO₃ + 2HCl (aq) ​$\rightarrow$_____ + H₂O(l) + CO₂(g).

When balancing the equation with polyatomic ions, ${\mathrm{CaSO}}_4+{\mathrm{NaNO}}_3\to \mathrm{Ca}({\mathrm{NO}}_3{)}_2+{\mathrm{Na}}_2{\mathrm{SO}}_4$, you need to modify the coefficient of _____ molecule.

(A) ${\mathrm{NaNO}}_3$     (B)${\mathrm{CaSO}}_4$     (C) ${\mathrm{Na}}_2{\mathrm{SO}}_4$

Enter your correct answer as A, B or C.

When balancing a chemical equation, you should not modify the _____ of the atoms and molecules.

The set of numerical coefficient that balances the equation $K_{2}Cr{O}_4+HCl\to K_{2}C{r}_2{O}_7+KCl+H_{2}O$ is-

The reaction between yttrium metal, $\mathrm{Y}$ and dilute hydrochloric acid produces ${\mathrm{H}}_2\left(\mathrm{g}\right)$ and ${\mathrm{Y}}^{3+}$ ions. The molar ratio of yttrium used to hydrogen produced is