Which of the following equations has the correct products and is balanced correctly for a reaction between Na3PO4 and KOH?

Chemistry

1 answer:

ASHA 777 [7]4 years ago

5 0

The answer is: A) Na3PO4 + 3KOH → 3NaOH + K3PO4, because K retains the same charge throughout the reaction.

This chemical reaction is double displacement reaction - cations (K⁺ and Na⁺) and anions (PO₄³⁻⁻ and OH⁻) of the two reactants switch places and form two new compounds.

Na₃PO₄ is sodium phosphate.

KOH is potassium hydroxide.

NaOH is sodium hydroxide.

K₃PO₄ is potassium phosphate.

According to the mass conservation law, there are same number of atoms on both side of balanced chemical reaction.

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Chemistry!! Please help

m_a_m_a [10]

Answer:

5.3 × 10⁻¹⁷ mol·L⁻¹

Explanation:

Let s = the molar solubility.

Cu₂S(s) ⇌ 2Cu⁺(aq) + S²⁻(aq); K_{sp} = 6.1 × 10⁻⁴⁹

E/mol·L⁻¹: 2s s

K_{sp} =[Cu⁺]²[S²⁻] = (2s)²×s = 4s^3 = 6.1 × 10⁻⁴⁹

$s^{3}= \frac{6.1 \times 10^{-49}}{4} = 1.52 \times 10^{-49}$

$s = \sqrt[3]{1.52 \times 10^{-49}} \text{ mol/L} = 5.3 \times 10^{-17} \text{ mol/L}$

6 0

3 years ago

• Write the chemical formulae of the following:-

a_sh-v [17]

The chemical formulae of the given compounds are as follows:

Magnesium chloride: MgCl₂
Aluminium chloride: AlCl₃
Calcium oxide: CaO
Calcium carbonate: CaCO₃
Copper nitrate: Cu(NO₃)₂

<h3>Chemical formulae</h3>

A chemical formulae a set of chemical symbols showing the elements present in a compound and their relative proportions in that chemical compound.

The information provided by a chemical formula include: