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m_a_m_a [10]
3 years ago
12

#1Write a balanced chemical equation to show the reaction. Include state symbols.

Chemistry
1 answer:
AURORKA [14]3 years ago
5 0

Answer:

Balanced chemical equation:

2AgNO₃ + Zn → ZnNO₃ + 2Ag

Type of reaction:

It is the single replacement reaction.

Explanation:

Consider the reaction between zinc and silver nitrate. In this chemical reaction the zinc is substituted in place of silver in silver nitrate compound.

Chemical equation:

AgNO₃ + Zn → ZnNO₃ + Ag

Balanced chemical equation:

2AgNO₃ + Zn → ZnNO₃ + 2Ag

The starting material consist of compound ( AgNO₃) and pure element (Zn).

After reaction a new compound ( ZnNO₃) and pure element (Ag) is generated.

Type of reaction:

It is the single replacement reaction.

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

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What is the molarity of the potassium hydroxide if 25.25 mL of KOH is required to neutralize 0.500 g of oxalic acid, H2C2O4? H2C
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First step is to find the number of moles of oxalic acid.

n(oxalic acid) = \frac{0.5g}{90.03 g/mol} = 5.5537*10^{-3} mol\\

Now use the molar ratio to find how many moles of NaOH would be required to neutralize 5.5537*10^{-3} mol\\ of oxalic acid.

n(oxalic acid): n(potassium hydroxide)

         1           :            2                  (we get this from the balanced equation)

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x = 0.0111 mol

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c = \frac{number of moles}{volume} = \frac{0.0111}{0.025} = 0.444 mol/L

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