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ra1l [238]
3 years ago
11

What are the coefficients that will balance the skeleton equation below?alcl3 + naoh → al(oh)3 + nacl?

Chemistry
2 answers:
aev [14]3 years ago
8 0

Answer : The coefficients  used to balance the skeleton equation below is, 1,3,1,3

The balanced chemical reaction will be,

AlCl_3+3NaOH\rightarrow Al(OH)_3+3NaCl

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

If the amount of atoms of each type on the left and right sides of a reaction differs then to balance the equation by adding coefficient in the front of the elements or molecule or compound in the chemical equation.

The coefficient tell us about that how many molecules or atoms present in the chemical equation.

The given chemical reaction is,

AlCl_3+NaOH\rightarrow Al(OH)_3+NaCl

This reaction is an unbalanced chemical reaction because in this reaction number of hydrogen and chlorine atoms are not balanced.

In order to balance the chemical equation, the coefficient '3' put before the NaOH and NaCl and we get the balanced chemical equation.

The balanced chemical reaction will be,

AlCl_3+3NaOH\rightarrow Al(OH)_3+3NaCl

Karo-lina-s [1.5K]3 years ago
3 0
AlCl3 + 3NaOH -> Al(OH)3 + 3NaCl

1 3 1 3
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6 0
3 years ago
Jamal is working with three ionic compounds: sodium chloride, calcium sulfide, and barium oxide. His teacher asks him which are
Lubov Fominskaja [6]

Answer:

option A is correct  ( sodium, calcium and barium)

Explanation:

Given compounds:

Sodium chloride , calcium sulfide, barium oxide

We know that metals form positive ions. In order to solve the problem we must identify the metals from given compounds.

Na⁺Cl⁻

Ca²⁺S²⁻

Ba²⁺O²⁻

We can see that sodium, calcium and barium contain positive charges.

Thus option A is correct.

Because sodium have one valance electron. When it combine with chlorine sodium lose its one electron to complete the octet and chlorine accept it to complete its octet. Thus sodium form positive ion and chlorine form negative ion.

Similarly barium and calcium are present in group 2. Both have two valance electron. When they lose them cation are formed.

Other option are incorrect because,

Option B have sulfur and oxygen which are anion.

Option C have chlorine which is also anion

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How many grams of H2SO4 are needed to prepare 500. mL of a .250M solution?
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Answer:

We need 12.26 grams H2SO4

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Step 1: Data given

Volume of a H2SO4 solution = 500 mL = 0.500 L

Concentration of the H2SO4 solution = 0.250 M

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Step 2: Calculate moles H2SO4

Moles H2SO4 = concentration * volume

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Step 3: Calculate mass of H2SO4

Mass of H2SO4 = moles * molar mass

Mass of H2SO4 = 0.125 moles * 98.08 g/mol

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