Ch.3 - Chemical Reactions and Reaction Stoichiometry

Problem 87c

Chapter 3, Problem 87c

Write the balanced chemical equations for c. the combination reaction between nickel metal and chlorine gas.

Verified step by step guidance

Identify the reactants and products: Nickel (Ni) and chlorine gas (Cl_2) are the reactants, and the product is nickel chloride (NiCl_2).

Write the unbalanced chemical equation: Ni + Cl_2 \rightarrow NiCl_2.

Count the number of each type of atom on both sides of the equation: On the left, there is 1 Ni and 2 Cl atoms; on the right, there is 1 Ni and 2 Cl atoms.

Check if the equation is balanced: The number of each type of atom is the same on both sides, so the equation is already balanced.

Write the balanced chemical equation: Ni + Cl_2 \rightarrow NiCl_2.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above.

Video duration:

Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Combination Reaction

A combination reaction, also known as a synthesis reaction, occurs when two or more reactants combine to form a single product. In this type of reaction, elements or simpler compounds react to create a more complex compound. For example, when nickel metal reacts with chlorine gas, they combine to form nickel(II) chloride.

Balancing Chemical Equations

Balancing chemical equations is essential to ensure that the law of conservation of mass is upheld, meaning the number of atoms of each element must be the same on both sides of the equation. This involves adjusting coefficients in front of the reactants and products to achieve equal numbers of each type of atom. A balanced equation accurately represents the stoichiometry of the reaction.

Chemical Symbols and Formulas

Chemical symbols and formulas are shorthand representations of elements and compounds. Each element is represented by a one- or two-letter symbol, while compounds are represented by formulas that indicate the types and numbers of atoms present. For instance, nickel is denoted as 'Ni' and chlorine as 'Cl', while the compound formed from their reaction is represented as 'NiCl2'.

Recommended video:

Guided course

03:17

Lewis Dot Symbols

Related Practice

Textbook Question

Hydrogen sulfide is an impurity in natural gas that must be removed. One common removal method is called the Claus process, which relies on the reaction: 8 H2S1g2 + 4 O21g2¡S81l2 + 8 H2O1g2 Under optimal conditions the Claus process gives 98% yield of S8 from H2S. If you started with 30.0 g of H2S and 50.0 g of O2, how many grams of S8 would be produced, assuming 98% yield?

1894

views

Textbook Question

When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms sodium sulfide and water. How many grams of sodium sulfide are formed if 1.25 g of hydrogen sulfide is bubbled into a solution containing 2.00 g of sodium hydroxide, assuming that the sodium sulfide is made in 92.0% yield?

2678

views

Textbook Question

Write the balanced chemical equations for a. the complete combustion of acetic acid (CH3COOH), the main ingredient in vinegar;

views

Textbook Question

The effectiveness of nitrogen fertilizers depends on both their ability to deliver nitrogen to plants and the amount of nitrogen they can deliver. Four common nitrogen-containing fertilizers are ammonia, ammonium nitrate, ammonium sulfate, and urea [(NH2)2CO] Rank these fertilizers in terms of the mass percentage nitrogen they contain.

views

Textbook Question

(b) Hemoglobin, the oxygen-carrying protein in red blood cells, has four iron atoms per molecule and contains 0.340% iron by mass. Calculate the molar mass of hemoglobin.

1608

views

Textbook Question

b. How many molecules of C9H8O4 are in this tablet?

views