Balancing Equations Worksheet Answers Key

Balancing Equations Worksheet and Key

1. Answer the following questions most the chemical equation shown below:

2 Hii + Otwo → ii H2O

a) What are the reactants?

b) What is the product?

c) What do nosotros call the number "2" in front end of the Hii (and H2 O) ?

d) Is the reaction balanced?

e) Why is at that place not a coefficient for Oii? .

f) How many hydrogen atoms are needed to produce two H2O molecules?

grand) How many oxygen atoms are needed to produce two HtwoO molecules?

h) How many hydrogen molecules are needed to produce ii H2O molecules?

i) How many oxygen molecules are needed to produce two H2O molecules?

j) Write the "word equation" that you would use to describe this reaction.

• Use words in a sentence, not formulas or an pointer. Ignore the coefficients.

two. Residual the following chemical equations:

a) Fe + Otwo → Fe2 Oiii

b) H2 + Cl2 → HCl

c) Ag + H2Due south → Agtwo South + H2

d) CHfour + O2 → CO2 + H2O

e) HgO → Hg + O2

f) Co + H2O → Co2 Othree + Hii

3. Write balanced chemical equations for each of the following descriptions of a chemical reaction.

• You practice not need to include the phases of the reactants or products.

IMPORTANT Notation: Before attempting to residue the equations, you must first convert the

compound names into the right chemical formulas. If you begin to struggle with that, you may

wish to get back to Affiliate 3 and re-piece of work the naming bug.

a) Aluminum metal reacts with copper(II) chloride to produce aluminum chloride and copper metal.

b) Lead(Ii) nitrate reacts with sodium bromide to produce lead(2) bromide and sodium nitrate.

• HINT: Since you have the same polyatomic ion (nitrate) on both sides of the equation you

can use the shortcut that was listed in Footstep #1 of our balancing method.

c) Zinc metallic reacts with oxygen gas to produce zinc oxide

(Recall that oxygen is ane of the diatomic molecules that are referred to by their chemical element's proper name).

Balancing Equations Worksheet Answers Key,

Source: https://www.studocu.com/en-au/document/murdoch-university/foundations-of-chemistry/balancing-equations-worksheet-and-key-7-23-09/5419638