Answer : The correct answer is 2.36 mol of gold
1 mole of any element have 6.022 x 10²³ number of atoms ( Avogadro's number).
So the formula relating mole and number of atoms is given as :
Plugging value in formula :
Mole of gold = 2.36 mol
How will the concentration of H+ and OH− ions change when a substance with a pH 3.2 is added to water? Both H+ and OH− will incr
2 answers:
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Answer:
Decreasing order of strength of the the acids :
Explanation:
The strength of an acid is measured by their pH of aqueous solution.
- Lower the pH more will be the hydrogen ions and stronger will be the acid.
- Higher the pH less will be the hydrogen ions and weaker will be the acid.
Solution of HX , has equal number of hydrogen ions as a that of its initial molecules o HX.
Solution of HY , molecules of hydrogen ions are half of the molecules of HY.
Solution of HZ , one quarter molecules of hydrogen ions and three quarter of the molecules of HY.
This means that HX is strongest acid followed by HY and then HZ.
Decreasing order of strength of the the acids :