Answer:
pH = 6.5
Explanation:
Given data:
pH of substance = ?
[OH⁻] concentration = 3.2×10⁻⁸
Solution:
pOH = -log[OH⁻]
pOH = -log[3.2×10⁻⁸]
pOH = 7.5
we know that,
pH + pOH = 14
pH = 14- pOH
pH = 14 - 7.5
pH = 6.5
Answer:
The pH of the solution increases.
Explanation:
Acetic acid is a weak acid, this means it does not dissociate completely in aqueous solution.
Sodium acetate on the other hand is a salt which dissociates to give acetate ions ad sodium ion.
Also, sodium acetate is the conjugate base of acetic acid. A mixture of a weak acid and its conjugate base is a buffer solution.
The mixture leads to a greater concentration of acetate ion, CH3COO-. shere is an increase in the pH of the solution.
So, when you are adding sodium acetate to a solution of acetic acid, concentration of acetate anions increases. Thus, there will be a decrease of hydronium ions resulting in pH increase.
Answer:
The correct answer is that as the temperature have increased the range of the lionfish has changed. The lionfish are native to the tropical waters of the Indo-Pacific region. The climatic change will increase the temperature of water and this will lead to the increase in the population of the fishes.
Explanation:
Answer:
b. A mole of chlorine gas contains 2 (6.02 * 10^23 ) atoms.
c. A mole of carbon dioxide contains two moles of oxygen molecules (CO2)
e. A mole consists of the number of particles in exactly 12g of naturally occurring carbon.
Explanation:
A mole of oxygen gas (O2) contains 2 (6.02 * 10^23) atoms
A mole of Ammonia gas (NH3) has a mass of 17.031g/mol
A mole is defined as the unit used in measurement of the amount of substances in the International System of Units.
A mole was initially defined as the number of particles in exactly 12g of naturally occurring carbon.
Therefore, options b, c and e are correct