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What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable?
Verified Answer
What is molarity of K in aqueous solution that contains 17.4 ppm of P...
17.4 ppm means 17.4 mg/litre. So first convrt it into gm = 17.4�10^-3 gm/litre.
Nw to find molarity =w(solute in gm)/mwt of solute�solution in litre.
=17.4�10^-3/174�1 =10^-4M
So in k2so4 k+ it will brk as 2 K+ therefore molarity=2�10^-4 ans.
Nw to find molarity =w(solute in gm)/mwt of solute�solution in litre.
=17.4�10^-3/174�1 =10^-4M
So in k2so4 k+ it will brk as 2 K+ therefore molarity=2�10^-4 ans.
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What is molarity of K in aqueous solution that contains 17.4 ppm of P...
Solution:
Given, concentration of potassium sulphate = 17.4 ppm
To find molarity of K, we need to convert ppm into molarity.
Step 1:
Find the molar mass of potassium sulphate.
Molar mass of K2SO4 = 2 × atomic mass of K + atomic mass of S + 4 × atomic mass of O
= 2 × 39.1 + 32.1 + 4 × 16.0
= 174.3 g/mol
Step 2:
Calculate the number of moles of potassium sulphate present in 1 L of solution.
Number of moles = concentration (in g/L) ÷ molar mass
Concentration of potassium sulphate in ppm = 17.4 ppm = 17.4 mg/L
Number of moles of K2SO4 in 1 L of solution = 17.4 mg/L ÷ 174.3 g/mol
= 0.0001 mol/L
Step 3:
Calculate the number of moles of potassium ions (K+) present in 1 L of solution.
In 1 mole of K2SO4, there are 2 moles of K+ ions.
Number of moles of K+ ions = 2 × 0.0001 mol/L
= 0.0002 mol/L
Step 4:
Calculate the molarity of K+.
Molarity of K+ = Number of moles of K+ ions ÷ Volume of solution in L
= 0.0002 mol/L
Therefore, the molarity of K in the given solution is 0.0002 M or 0.2 mM.
Answer: Option (a) 0.0002
Given, concentration of potassium sulphate = 17.4 ppm
To find molarity of K, we need to convert ppm into molarity.
Step 1:
Find the molar mass of potassium sulphate.
Molar mass of K2SO4 = 2 × atomic mass of K + atomic mass of S + 4 × atomic mass of O
= 2 × 39.1 + 32.1 + 4 × 16.0
= 174.3 g/mol
Step 2:
Calculate the number of moles of potassium sulphate present in 1 L of solution.
Number of moles = concentration (in g/L) ÷ molar mass
Concentration of potassium sulphate in ppm = 17.4 ppm = 17.4 mg/L
Number of moles of K2SO4 in 1 L of solution = 17.4 mg/L ÷ 174.3 g/mol
= 0.0001 mol/L
Step 3:
Calculate the number of moles of potassium ions (K+) present in 1 L of solution.
In 1 mole of K2SO4, there are 2 moles of K+ ions.
Number of moles of K+ ions = 2 × 0.0001 mol/L
= 0.0002 mol/L
Step 4:
Calculate the molarity of K+.
Molarity of K+ = Number of moles of K+ ions ÷ Volume of solution in L
= 0.0002 mol/L
Therefore, the molarity of K in the given solution is 0.0002 M or 0.2 mM.
Answer: Option (a) 0.0002
Community Answer
What is molarity of K in aqueous solution that contains 17.4 ppm of P...
0.0002
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What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable?
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What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable?.
What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is molarity of K in aqueous solution that contains 17.4 ppm of Potassium Sulphate ? a)0.0002 b)0.002 c)0.02 d) unpredictable?.
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