Answer:
according to my reading
use own words
Explanation:
Salts are combinations of acids and bases. The cation comes from a base and the anion from an acid. Therefore, to make KNO3 we react KOH and HNO3. See how that is done? We write K and add OH to make KOH. We take NO3 and add H to make HNO3.
Answer:
2RbNO2 + BaCO3 → Rb2CO3 + Ba(NO2)2
Explanation:
The balanced reaction equation is shown below;
2RbNO2 + BaCO3 → Rb2CO3 + Ba(NO2)2
This reaction is possible because the reduction potential of Rb is -2.98V while that of Ba is –2.92 V. Hence Rb can displace Ba from its salt solution.
The equation is balanced since the number of atoms of each element on the left and right hand sides of the reaction equation are equal.
<h3><u>Answer;</u></h3>
At room temperature, the solubility of which solute in water would be most affected by a change in pressure?
<h3><u>Explanation;</u></h3>
- As the pressure on a gas confined above a liquid increases, the solubility of the gas increases in the liquid.
- Carbon dioxide gas is most soluble in water under conditions of high pressure and low temperature.
- The solubility of gases decreases with increasing temperature, so the air space inside the cylinder when cold water is used will be less compared to warm water.
Answer:
The new pH is 10.8031
Explanation:
Given information:
[NaA] = concentration = 2 M
[HA] = concentration = 2 M
V = volume = 1 L
15 g of NaOH added
Question: What is the new pH, pH = ?
Moles of NaA:

Moles of HA:

Moles of NaOH:

The reaction:
HA + NaOH → NaA + H₂O
Moles of NaA = 2 + 0.375 = 2.375 moles
Moles of HA = 2 - 0.375 = 1.625 moles
The value of Ka is 2.3x10⁻¹¹
The pKa:

Applying the Henderson's Hasselbach equation
