Chemistry, 14.10.2019 19:00 lizzyhearts

Identify the missing coefficient in the balanced equation and classify the type of reaction.
2h3po4 +3ba(oh)2 — baz(po4)2 +
h2o
6; neutralization
3; combustion
6; combustion
3; neutralization

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Answer from: gracie0818

6; Neutralization

Explanation:

2H_3 PO_4+3Ba(OH)_2Ba_3 (PO_4)_2+H_2 O

(Unbalanced)

Balancing is making the number of atoms of each element same on both the sides (reactant and product side).

To find the number of atoms of each element we multiply coefficient and the subscript

For example 5Ca_1Cl_2 contains

5 × 1 = 5 ,Ca atoms and

5 × 2 = 10, Cl atoms

If there is a bracket in the chemical formula

For example 3Ca_3 (P_1 O_4 )_2 we multiply coefficient × subscript × number outside the bracket to find the number of atoms

(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

3 × 3 = 9 , Ca atoms

3 × 1 × 2 = 6, P atoms

3 × 4 × 2 = 24, O atoms are present

Reactant side Number of atoms or groups Product side

of each element

3 Ba 3

2 PO_4 2

12 H 2

6 O (Exclude O of PO_4 ) 1

To balance H and O, multiply H_2O by 6 so we have

2H_3 PO_4+3Ba(OH)_2Ba_3 (PO_4)_2+6 H_2 O

Reactant side Number of atoms or groups Product side

of each element

3 Ba 3

2 PO_4 2

12 H 12

6 O (Exclude O of PO_4 ) 6

Balanced

Acid and base reacts to form salt and water is called a neutralization reaction.

Answer from: Quest

Idon't know hope someone you

Answer from: Quest

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o

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Identify the missing coefficient in the balanced equation and classify the type of reaction.
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