Balancing Chemical Equations by Partial Equation Method

Q.

Balance the equation: ${\mathrm{N}}_2+{\mathrm{H}}_2\to {\mathrm{NH}}_3$

Q.

Balance the equation: ${\mathrm{Na}}_2{\mathrm{CO}}_3+\mathrm{HCl}\to \mathrm{NaCl}+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$

Q.

Lead($\mathrm{II}$) nitrate reacts with potassium iodide to form lead($\mathrm{II}$) iodide and potassium nitrate. How do you write a balance equation for this?

Q.

The number of moles of ${\mathrm{KMnO}}_4$ that will be needed to react completely with one mole of Ferrous Oxalate in acidic medium is:

1. $\frac{2}{5}$

2. $\frac{3}{5}$

3. $\frac{4}{5}$

4. $1$

Q.

Balance this equation: $\mathrm{KOH}+{\mathrm{H}}_2{\mathrm{SO}}_4\to {\mathrm{K}}_2{\mathrm{SO}}_4+{\mathrm{H}}_2\mathrm{O}$

Q.

What is the balanced equation for sodium chloride?

Q.

What is the balanced equation of ${\mathrm{SO}}_2+{\mathrm{O}}_2\to {\mathrm{SO}}_3$

Q. Question 19.2
Write the balanced chemical equation for the following reaction and identify the type of reaction:

Sodium hydroxide solution is treated with acetic acid to form sodium acetate and water.

Q.

Question 19.3

Write the balanced chemical equation for the following reaction and identify the type of reaction.

Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated ${\text{H}}_2{\text{SO}}_4$.

Q.

Write the balanced chemical equation:

Carbon dioxide passed through lime water gives white turbidity due to the formation of Calcium carbonate.

Q.

105. State the type of reaction taking place. Also balance the equation.
${\mathrm{CuSO}}_4+\mathrm{NaOH}\to \mathrm{Cu}{\left(\mathrm{OH}\right)}_2+{\mathrm{Na}}_2{\mathrm{SO}}_4$

Q. Question 28
Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercury are present in 225 g of pure HgS? Molar mass Hg and S are $200.6gmo{l}^{-1}$ and $32gmo{l}^{-1}$ respectively.

Q.

What is the balanced equation for complete hydrolysis of ${\mathrm{XeF}}_6$.

Q. Question 7.2
Write the balanced chemical equation for the following reaction:
Zinc + Silver nitrate $\to$ Zinc nitrate + Silver

Q.

Write the chemical formulae and hence balance the following word equation

Ammonium chloride+calcium hydroxide$\to$calcium chloride+ammonia+water

Q.

Write the correctly balanced equation in the following case:

When carbon dioxide is passed over red hot coke.

Q. Balance the following equation.

Q. According to the law of definite proportions, mass can neither be created nor destroyed in a chemical reaction.

1. True
2. False

Q. Which of the following chemical equation is balanced?​

1. $H_2\left(g\right)+O_2\left(g\right)\to H_{2}O\left(l\right)$
2. $3H_2\left(g\right)+2O_2\left(g\right)\to 2H_{2}O\left(l\right)$
3. $2H_2\left(g\right)+2O_2\left(g\right)\to 2H_{2}O\left(l\right)$
4. $2H_2\left(g\right)+O_2\left(g\right)\to 2H_{2}O\left(l\right)$

Q. Potassium chlorate $\left(KCl{O}_3\right)$ on heating gives potassium chloride and oxygen. Write a balanced for this reaction and indicate the evolution of gas.

Q. What coefficients are required to balance the following equation?
$Ca{\left(OH\right)}_2+HCl\to Ca{Cl}_2+H_{2}O$

1. $1,2,2,2$
2. $2,4,2,4$
3. $1,2,1,1$
4. $1,2,1,2$

Q.

How will you provide the following information in a chemical equation?

Reaction conditions.

Q.

Write balanced equation for the reaction between nitrogen and oxygen when lightning strikes.

Q.

Balance the equation

$\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2\to \mathrm{PbO}+{\mathrm{NO}}_2+{\mathrm{O}}_2$

Q. Write the balanced chemical equations of the following word equation:
Potassium bicarbonate + Sulphuric acid $\to$ Potassium Sulphate + carbon di oxide + water

Q.

Balance the following equation:

${\mathrm{N}}_2+{\mathrm{H}}_2\to {\mathrm{NH}}_3$

Q. $KO{H}_{\left(aq\right)}+H_{3}P{O}_{4\left(aq\right)}\to K_{3}P{O}_{4\left(aq\right)}+H_2{O}_{\left(l\right)}$
When the equation for the reaction represented above is balanced and the coefficients are reduced to the lowest whole number terms, the coefficient for $H_{2}O$ is:

1. $1$
2. $2$
3. $3$
4. $4$

Q. What coefficients is needed for $NaH{CO}_3$ to balance the following equation?
$NaH{CO}_3\to {Na}_2{CO}_3+H_{2}O+{CO}_2$

1. $0$
2. $1$
3. $3$
4. $2$

Q. Write the balanced chemical equations of the following word equation:
Chlorine + Sulphur di oxide + Water $\to$ Sulphuric acid + Hydrogen chloride

Q. State the two laws of chemical combination.