Which of the following polyatomic ions has a 3- ionic charge?
1 answer:
Answer: Option (a) is the correct answer.
Explanation:
Poly means many and polyatomic ions means an ion(s) with two or more different atoms.
Out of the given options, phosphate ion is the polyatomic ion which has an ionic charge of 3-.
The formula depicting a phosphate ion is .
Whereas Nitrate, Sulfate, Hydroxide , Bicarbonate does not carry or have a 3- ionic charge.
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Answer: The total pressure of the mixture is 2.76 atm
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
Given : =total pressure of gases = ?
= partial pressure of oxygen = 0.00461 atm
= partial pressure of nitrogen = 1.78 atm
= partial pressure of argon = 0.975 atm
putting in the values we get:
Thus the total pressure of the mixture is 2.76 atm