Countercurrent Flow
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The negative log function that determines the acidity or alkalinity by hydronium ion concentration is called pH.
The substance having high will have:
Option B. A low and a high
This characteristic can be explained as:
- The concentrations of
and
are inversely dependent on each other so when the concentration of raises then the concentration of
- The pH of a solution or substance is calculated with the help of:
From the formula, it can be deduced that when the concentration of is high then the pH has a low value and it means that the solution is acidic.
- pH can also be written as:
From this formula we can that when the value of pH is less then the value of pOH will be increased and vice versa.
Therefore, when pOH is in high concentration then is low.
To learn more about pH and pOH follow the link:
Answer:
Explanation:
This question asks us to find the temperature change given a volume change. We will use Charles's Law, which states the volume of a gas is directly proportional to the temperature. The formula is:
The volume of the gas starts at 250 milliliters and the temperature is 137 °C.
The volume of the gas is increased to 425 milliliters, but the temperature is unknown.
We are solving for the new temperature, so we must isolate the variable T₂. First, cross multiply. Multiply the first numerator and second denominator, then multiply the first denominator and second numerator.
Now the variable is being multiplied by 250 milliliters. The inverse of multiplication is division. Divide both sides of the equation by 250 mL.
The units of milliliters (mL) cancel.
The temperature changes to <u>232.9 degrees Celsius.</u>
Answer:
<h2>2Na(g) + Cl2 (g) --> 2NaCl(s)</h2>Explanation:
- Such type of chemical reaction in which change in oxidation state takes place due to loss and gain of electrons is known as a redox reaction.
- Such type of the species that lose electron is called reducing agent and the process is known as oxidation because the species is oxidized by losing an electron and thus acts as a reducing agent.
- Such type of the species that gain electron is called an oxidizing agent and the process is known as reduction because the species is reduced and thus acts as the oxidizing agent.
- In the given options, only the oxidation number changes in the reaction such as
, so it is a form of the redox reaction.
- In this reaction, Na atom changes into
ion and the Cl atom converts into
ion that means a change in oxidation states occurs 0 to +1 in the case of Na atom and 0 to -1 in the case of Cl atom. In others options, there is no change in the oxidation state so they are not redox reactions.