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vesna_86 [32]
3 years ago
14

In an accident, a solution containing 2.5 kg of nitric acid was spilled. Two kilograms of Na2CO3 was quickly spread on the area

and CO2 was released by the reaction by the reaction. Was sufficient NA2CO3 used to neutralize all the acid?
Chemistry
1 answer:
storchak [24]3 years ago
4 0

First we must write a balanced chemical equation for this reaction

Na_2CO_3 _(_a_q_)+ 2HNO_3_(_a_q_) \implies 2NaNO_3_(_s_) + CO_2_(_g_) + H_2O_(_l_)

The mole ratio for the reaction between HNO_3 and Na_2CO_3 is 1:2. This means 1 moles of Na_2CO_3 will neutralize 2 moles HNO_3. Now we find the moles of each reactant based on the mass and molar mass.

2500g HNO_3 \times \frac{mol}{63.01g\ HNO_3} = 39.67 mol\ HNO_3

2000g\ Na_2CO_3 \times \frac{mol}{105.99g \ Na_2CO_3} = 18.87 mol\ Na_2CO_3

\frac{18.87 mol Na_2CO_3}{39.67\ HNO_3} = \frac{1 molNa_2CO_3}{2 mol HNO_3}

The Na_2CO_3 was enough to neutralize the acid because 18.87:39.67 is the same as 1:2 mol ratio.

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I'm sorry for asking so many questions this assignment is past due and I need it done NOW
marishachu [46]

Answer:

7N to the right

Explanation:

7 0
2 years ago
Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?
Phoenix [80]

Answer: Option (B) is the correct answer.

Explanation:

It is known that for writing a chemical reaction equation, reactants are written on left hand side whereas products are written on right hand side.

And in between reactants and products a forward arrow is placed pointing towards the products.

Therefore, the reaction for carbon burns in the presence of oxygen to give carbon dioxide will be written as follows.

          Carbon + Oxygen \rightarrow Carbon dioxide

Here, carbon and oxygen atoms are the reactants whereas carbon dioxide is the product.

6 0
3 years ago
S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
lina2011 [118]

Answer:

43.5 moles of HNO₃.

Explanation:

The balanced equation for the reaction is given below:

S + 6HNO₃ —> H₂SO₄ + 6NO₂ + 2H₂O

From the balanced equation above,

6 moles of HNO₃ reacted to produce 2 moles of H₂O.

Finally, we shall determine the number of mole of HNO₃ required to produce 14.5 moles of H₂O.

This can be obtained as illustrated below:

From the balanced equation above,

6 moles of HNO₃ reacted to produce 2 moles of H₂O.

Therefore, Xmol of HNO₃ will react to produce 14.5 moles of H₂O i.e

Xmol of HNO₃ = (6 × 14.5)/2

Xmol of HNO₃ = 43.5 moles

Therefore, 43.5 moles of HNO₃ is required to produce 14.5 moles of H₂O.

7 0
2 years ago
Choose the compound below that should have the highest melting point according to the ionic bonding model. Choose the compound b
Bingel [31]

Answer:

AlN has highest melting point among given.

Explanation:

As per ionic model, ionic compounds are held together by electrostatic force. The ionic compound having strong electrostatic force will have high melting point.

Electrostatic force is proportional to charge and size of constituent ions.

F=k \frac{q_+\times q_-}{r^2}

In case of MgO

Charge on Mg = +2

Charge on O = -2

F=-k \frac{(+2)\times (--2)}{r^2}=\frac{4k}{r^2}

In case of LiF

Charge on Li = +1

Charge on F = -1

F=-k \frac{(+1)\times (-1)}{r^2}=\frac{1k}{r^2}

In case of AlN

Charge on Al = +3

Charge on N = -3

F=-k \frac{(+3)\times (-3)}{r^2}=\frac{9k}{r^2}

In case of RbF

Charge on Rb = +1

Charge on F = -1

F=-k \frac{(+1)\times (-1)}{r^2}=\frac{1k}{r^2}

In case of CaS

Charge on Ca = +2

Charge on S = -2

F=-k \frac{(+2)\times (-2)}{r^2}=\frac{4k}{r^2}

As magnitude of electrostatic force is highest in AlN, therefor, it has highest melting point.

4 0
3 years ago
FB and were to bond the difference in electronegativity would be
Kay [80]
Poler covalent
again don’t quote me on it i’m just trying my best with what i remember
3 0
2 years ago
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