Answer:
Explanation:
A solution with a pH value of 7 is neutral i.e neither acidic nor alkaline. A solution with a pH less than 7 is said to be acidic, while one with a pH value more than 7 is alkaline. Acidity increases as the value decrease below 7, while alkalinity increases as the value increase about 7.
Given that H2A is a diprotic weak acid have pKa values of 5.0 ad 9.0, it will undergo dissociation in the solution as:
NOTE: These reactions are reversible reactions.
Thus;
The primary species is HA⁻
The secondary species is A²⁻
<u>Answer:</u> The mass of the nitrous oxide gas produced is 0.011 kg.
<u>Explanation:</u>
To calculate the mass of the gas, we use the formula:
We are given:
Specific density of the gas =
Mass of the gas = ? kg
Volume of the gas = (Conversion Factor: )
Putting values in above equation, we get:
Hence, the mass of the nitrous oxide gas produced is 0.011 kg.
The balanced chemical equation between nitric acid and calcium hydroxide is:
2HNO3 (aq) + Ca(OH)2 (aq) ---> Ca(NO3)2 (aq) + 2H2O (l)
Calcium oxide has the chemical formula Ca(OH)2, while nitric acid has the formula HNO3. Salt (an ionic substance created by the reaction of an acid and a base) and water are the byproducts of the reaction between an acid and a base.
Now, to balance the equation, we have to make sure there are the same number of atoms (or ions) on both sides of the equation. Also, we must list the state of each compound in the equation.
HNO3 (aq) + Ca(OH)2 (aq) ---> Ca(NO3)2 (aq) + H2O (l)
We must balance the equation because the number of atoms on each side is not equal. To the right of the chemical formulas, put the balancing numbers.
The balanced chemical equation between nitric acid and calcium hydroxide has the equal amount of atoms on both sides as a result.
2HNO3 (aq) + Ca(OH)2 (aq) ---> Ca(NO3)2 (aq) + 2H2O (l)
Learn more about balanced chemical equation here:
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A number that shows the size or amount of something. Usually the number is in reference to some standard measurement, such as a meter or kilogram. Here some scales are used to measure weight.
Yes. That is a mixture. You are allowed to remove the sugar because there is sugar molecules in the water.