Balancing Chemical Equations

Balancing Chemical Equations

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Emma Peterson

FREE Resource

The video tutorial demonstrates how to balance a chemical equation involving nitric acid (HNO3) and sodium (Na). It begins by counting the atoms on each side of the equation, identifying the imbalance in hydrogen atoms. The tutorial then shows how to balance hydrogen by adjusting coefficients, followed by balancing nitrogen and oxygen. Finally, it addresses sodium, ensuring all elements are balanced, and concludes with a balanced equation.

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the initial counts of hydrogen, nitrogen, oxygen, and sodium atoms on the reactant side of the equation?

1 hydrogen, 1 nitrogen, 3 oxygens, 1 sodium

2 hydrogens, 1 nitrogen, 3 oxygens, 1 sodium

1 hydrogen, 2 nitrogens, 3 oxygens, 2 sodiums

2 hydrogens, 2 nitrogens, 6 oxygens, 2 sodiums

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you balance the hydrogen atoms in the equation?

Add a coefficient of 2 in front of HNO3

Add a coefficient of 2 in front of Na

Add a coefficient of 3 in front of NaNO3

Add a coefficient of 3 in front of HNO3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of adding a coefficient of 2 in front of HNO3?

It balances the hydrogen and nitrogen atoms

It balances only the hydrogen atoms

It balances the hydrogen, nitrogen, and oxygen atoms

It balances the hydrogen and oxygen atoms

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you balance the oxygen atoms in the equation?

Add a coefficient of 2 in front of Na

Add a coefficient of 2 in front of NaNO3

Add a coefficient of 3 in front of HNO3

Add a coefficient of 3 in front of NaNO3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of adding a coefficient of 2 in front of NaNO3?

It balances only the oxygen atoms

It balances the nitrogen and oxygen atoms

It balances the nitrogen, oxygen, and sodium atoms

It balances the nitrogen and sodium atoms

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the sodium atom balanced in the equation?

By adding a coefficient of 3 in front of NaNO3

By adding a coefficient of 2 in front of NaNO3

By adding a coefficient of 3 in front of Na

By adding a coefficient of 2 in front of Na

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final balanced equation for the reaction between nitric acid and sodium?

2HNO3 + Na → NaNO3 + H2

HNO3 + 2Na → NaNO3 + H2

2HNO3 + 2Na → 2NaNO3 + H2

HNO3 + Na → NaNO3 + H2

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