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shtirl [24]
4 years ago
13

The concentration of hydronium ions is greater than 1 × 10–7 for acidic solutions.

Chemistry
2 answers:
MatroZZZ [7]4 years ago
4 0

Answer: The given statement is true.

Explanation:

It is known that for a neutral solution, concentration is 1 \times 10^{-7} or we can say that pH of a neutral solution equals 7.

Whereas for an acidic solution, concentration is less than 1 \times 10^{-7} and the pH of an acidic solution is less than 7.

On the other hand, for a basic solution concentration is more than 1 \times 10^{-7} and the pH of basic solution is more than 7.

Thus, we can conclude that statement the concentration of hydronium ions is greater than 1 \times 10^{-7} for acidic solutions, is true.

Talja [164]4 years ago
3 0

Answer:

True.

Explanation:

  • The hydronium ion in neutral solution has the concentration of 1.0 x 10⁻⁷.

  • For acidic solution, the concentration of hydronium ions is greater than 1 × 10⁻⁷ that the pH be lower than 7.

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nikitadnepr [17]

Answer:

Mass = 14.3 g

Explanation:

Given data:

Mass of Mg(OH)₂  = 16.0 g

Mass of HCl = 11.0 g

Mass of MgCl₂ = ?

Solution:

Chemical equation:

Mg(OH)₂ + 2HCl    →   MgCl₂ + 2H₂O

Number of moles of Mg(OH)₂ :

Number of moles = mass/ molar mass

Number of moles = 16.0 g/ 58.3 g/mol

Number of moles = 0.274 mol

Number of moles of HCl :

Number of moles = mass/ molar mass

Number of moles = 11.0 g/ 36.5 g/mol

Number of moles = 0.301 mol

Now we will compare the moles of Mg(OH)₂  and HCl with MgCl₂.

                           Mg(OH)₂          :           MgCl₂

                                 1                 :               1

                                 0.274        :          0.274

                               HCl             :              MgCl₂

                                  2              :               1

                                0.301         :           1/2×0.301 = 0.150

The  number of moles of MgCl₂ produced by HCl are less so it will limiting reactant.

Mass of MgCl₂:

Mass = number of moles × molar mass

Mass = 0.150 ×  95 g/mol

Mass = 14.3 g

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