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3 years ago

Balance these 2 equations AND identify the products and the reactants:

Chemistry

1 answer:

iogann1982 [59]3 years ago

6 0

Answer:

Explanation:

1) NaCl → Na + Cl₂

2) Na + HCl → NaCl + H₂

Chemical equation:

NaCl → Na + Cl₂

Balanced chemical equation:

2NaCl → 2Na + Cl₂

There are two moles of sodium and two mole of chlorine on both side of equation so given chemical equation is correctly balanced and follow the law of conservation of mass.

Chemical equation:

Na + HCl → NaCl + H₂

Balanced chemical equation:

2Na + 2HCl → 2NaCl + H₂

There are two moles of sodium and two mole of chlorine and hydrogen on both side of equation so given chemical equation is correctly balanced and follow the law of conservation of mass.

Law of conservation mass

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

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An acid with molar mass 84.48 g/mol is titrated with 0.650 M KOH. What volume of KOH solution is needed to titrate 1.70 grams of

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$V=0.0310L=3.10mL$

Explanation:

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In this case, since the acid is monoprotic and the KOH has one hydroxyl ion only, we can see that at the equivalence point the moles of both of them are the same:

$n_{acid}=n_{KOH}$

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$n_{acid}=1.70g*\frac{1mol}{84.48g}=0.0201mol$

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$V=\frac{0.0201mol}{0.650mol/L}\\\\V=0.0310L=3.10mL$

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