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Andrei [34K]
3 years ago
9

A buffer is prepared by dissolving honh2 and honh3no3 in some water. write equations to show how this buffer neutralizes added h

+ and oh â. (use the lowest possible coefficients. omit states-of-matter in your answer.) h+
Chemistry
2 answers:
Anestetic [448]3 years ago
8 0
Hydroxylamine in water: HONH₂(aq) + H₂O(l) ⇄ HONH₃⁺(aq) + OH⁻(aq).
Hydroxylammonium nitrate in water: HONH₃NO₃(aq) → OHNH₃⁺(aq) + NO₃⁻(aq).
1) with positive hydrogen ions (protons) react base and gives weak conjugate acid: 
H⁺(aq) + HONH₂(aq) ⇄ HONH₃⁺(aq).
2) with hydroxide anions react acid and produce weak base and weak electrolyte water:
HONH₃⁺(aq) + OH⁻(aq) ⇄ HONH₂(aq) + H₂O(l).


Helga [31]3 years ago
5 0

Answer : When hydroxylamine is dissolved along with hydroxylammonium nitrate to prepare a buffer into water.

The chemical equation that can represent this reaction is -

  1. HONH_{2} + H_{2}O ⇔ HONH_{3}^{+} + OH^{-}
  2. HONH_{3}NO_{3}⇔ OHNH_{3}^{+} + NO{3}^{-}

This is the buffer which will resists the changes when an acid or base is added to this solution.

  • Acid addition H^{+}

HONH_{2} + H^{+} → HONH_{3}^{+}  

When an acid is added to this buffer solution the extra H^{+} will be converted into hydroxylammonium ion (which is a weak conjugate acid).

  • When adding OH^{-}

HONH_{3}^{+} + OH^{-} → HONH_{2} + H_{2}O  

when a base it added to the buffer it stabilizes the extra OH^{-} ions in the solution by converting them into hydroxylamine (which is weak base) and water molecules.

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Explanation :

Single displacement reaction : It is a type of chemical reaction in which the more reactive element displaces the less reactive element.

Option A reaction : 2NaBr+CaF_2\rightarrow 2NaF+CaBr_2

It is an example of double displacement reaction because in this reaction a positive cation and a negative anion of the two reactants exchange their places to form two new products.

Option B reaction : SnO_2+2H_2\rightarrow Sn+2H_2O

It is an example of single displacement reaction.

Option C reaction : 4Na+O_2\rightarrow 2Na_2O

It is an example of combination reaction because in this reaction two reactants react to give a single product.

Option D reaction : 2KClO_3\rightarrow 2KCl+3O_2

It is an example of decomposition reaction because in this reaction a single reactant decomposes into two or more products.

Option E reaction : 2Al+6HCl\rightarrow 2AlCl_3+3H_2

It is an example of single displacement reaction because in this reaction the most react element, aluminium displaces the less reactive element, hydrogen.

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T_{2} = 83.7^{o}C

Formula used to calculate heat energy is as follows.

q = m \times C \times (T_{2} - T_{1})

where,

q = heat energy

m = mass

C = specific heat capacity

T_{1} = initial temperature

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Substitute the values into above formula as follows.

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