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Chapter 7: Q. 7.85 (page 254)

If red spheres represent oxygen atoms, blue spheres represent nitrogen atoms, and all the Molecules are gases,

  1. Write the formula for each of the reactants and products.
  2. Write a balanced equation for the reaction.
  3. Indicate the type of reaction as combination, decomposition, single replacement, double replacement, or combustion.

Short Answer

Expert verified

(a) The Reactants in the reaction areNO,O2and products in the reaction is localid="1652509155284" NO2.

(b) The balanced chemical equation is localid="1652884872121" 2NO+O2鈫�2NO2.

(c) This is a combination reaction.

Step by step solution

01

Part (a) Step 1: Given Information

We need to Write the formula for each of the reactants and products of the given reaction.

02

Part (a) Step 2: Explanation

From the figure,

Red sphere = oxygen

Blue sphere = nitrogen

Therefore, the reactants of the reaction are NO,O2and products are NO2.

03

Part (b) Step 1: Given Information

We need to write the reaction based on given molecules.

04

Part (b) Step 2: Explanation

We are given that Reactants of reaction are NO,O2and products are NO2.

Therefore , the balanced reaction are:

localid="1652884886906" 2NO+O2鈫�2NO2

05

Part (c) Step 1: Given Information

We need to find the type of reaction.

06

Part (c) Step 2: Explanation

If we see the reaction 2NO+O2鈫�2NO2then we see that Two molecules react and formed a Single combined compound.

So it is COMBINATION REACTION.

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Most popular questions from this chapter

When nitrogen dioxide (NO2) gas from car exhaust combines with water vapor in the air, it forms aqueous nitric acid (HNO3), which causes acid rain, and nitrogen oxide gas. (7.4,7.7,7.8)

a. Write the balanced chemical equation.

b. How many moles of each product are produced from localid="1653471880792" 0.250moleof H2O?

c. How many grams of HNO3are produced when localid="1653471888239" 60gof NO2completely reacts?

d. How many grams of NO2are needed to form localid="1653471898307" 75.0gof HNO3?

A toothpaste contains 0.240%by mass sodium fluoride used to prevent dental caries and 5.0%by mass KNO3, which decreases pain sensitivity. One tube contains119g of toothpaste
role="math" localid="1652503120563" NaFand KNO3 are components found in toothpastes.

  1. How many moles of NaFare in the tube of toothpaste?
  2. How many fluoride ions, F-, are in the tube of toothpaste?
  3. How many grams of sodium ion, Na+, are in 1.50gof toothpaste?
  4. How many KNO3formula units are in the tube of toothpaste?

a. Why do chemical reactions require energy of activation ?

b. In an exothermic reaction, is the energy of the products higher or lower than that of the reactants?

c. Draw an energy diagram for an exothermic reaction.

The chemical reaction of hydrogen with oxygen produces water.

2H2(g)+O2(g)鈫�2H2O(g)

a. How many moles of O2are required to react with 2.6moles of H?

b. How many moles of H2are needed to react with 5.0moles ofO2?

c. How many moles of H2Oform when 2.5moles of O2react?

If green sphere represents the chlorine atoms and red sphere represents the oxygen atoms and all are gases.

  1. Write the formula for each of the reactants and products.
  2. Write the balanced equation.
  3. Indicate the type of reaction as combination, decomposition, single replacement, double replacement, or combustion.
See all solutions

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