Balancing Chemical Equations (Simplified) Practice Problems

In the molecular diagram below, the blue spheres represent nitrogen atoms, while the white spheres represent hydrogen atoms. Give the balanced equation for the reaction. Note that all the molecules are gases.

Consider the reaction depicted in the following diagram. The pink spheres represent iodine atoms, while the green spheres represent chlorine atoms. Provide the balanced reaction equation. Assume that all molecules are in gaseous form.

Is the following chemical equation balanced? C₇H₆O(l) + 7 O₂(g) → 7 CO₂(g) + 3 H₂O(g)

What is the correct balanced equation for the neutralization reaction shown below? 

HIO₄(aq) + Pb(OH)₂(s) → Pb(IO₄)₂ + H₂O(l)

Provide the balanced equation for the neutralization reaction below.

HI(aq) + Be(OH)₂(s) → BeI₂(aq) + H₂O(l)

Give the balanced chemical equation for the following reaction.

Ga(s) + HNO₃(aq) → Ga(NO₃)₃(aq) + H₂(g)

Write the balanced chemical equation for the following reaction: Sb₂O₃(s) + HI(aq) → SbI₃(aq) + H₂O(l)

Choose the correct explanation as to why the changing of a subscript on a substance is not allowed when balancing a chemical equation.

Hydrates are compounds that contain water in stoichiometric amounts. For example, copper (II) chloride, a brown solid, can absorb water to form copper (II) chloride dihydrate, a blue solid. Copper (II) chloride is sometimes used as a humidity indicator. Provide the balanced equation for the formation of the hydrate with water.

Choose the correct statement from the following statements on "balanced equation".

High temperature combustion usually involves the reaction of hydrocarbon fuels with oxygen gas to form carbon dioxide gas and water vapor. The carbon dioxide released in the atmosphere can dissolve in oceanwater, resulting in the formation of the carbonic acid. Provide the balanced equation for the combustion of liquid nonane (C₉H₂₀).

Determine which of the following equations is balanced.

Balance the equations below by adding the correct coefficients

_— CuO  + _— CO → _— Cu  + _— CO₂

_— Na₃N  +  _— H₂O →  _— NaOH  +  _— NH ₃

_— SeO₂  +  _— O₂ →  _— SeO₃

Identify coefficients of the balanced reaction for aqueous potassium sulfide reacts with aqueous Chromium (III) nitrate to form aqueous potassium nitrate and solid Chromium (III) sulfide

Write a balanced chemical equation for the reaction of aluminum hydroxide with sulfuric acid to produce aluminum sulfate and water.

Consider the following chemical reactions with compounds written in words instead of chemical formulas. Write balanced equations for these reactions using chemical formulas and all the physical states.

A) Sodium + chlorine → Sodium chloride

B) Calcium hydride + hydrochloric acid → calcium chloride + hydrogen

C) Carbon monoxide + oxygen → carbon dioxide

D) Magnesium oxide + sulfuric acid → magnesium sulfate + water

E) Sulfur + fluorine → sulfur hexachloride