alleryStart learning →The van't Hoff factor i for a strong electrolyte like CaCl2 (full dissociation) is:
- 3
- 4
- 1
- 2
Show answer and solution
Correct answer: A. 3
CaCl2 → Ca²⁺ + 2Cl⁻, giving 3 ions per formula unit.
**So i = 3. For NaCl, i = 2. For Al2(SO4)3, i = 5.**
Indian Navy INET Solutions — practice questions
Explore 14 free Solutions questions in Indian Navy INET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
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The van't Hoff factor i for a strong electrolyte like CaCl2 (full dissociation) is:Read the answer and worked solution →For solution of urea (M_w = 60 g/mol) with 6 g in 100 g water, molality:Read the answer and worked solution →Complete the two concentration definitionsRead the answer and worked solution →Molarity or molality?Read the answer and worked solution →True or false: concentrationRead the answer and worked solution →Naming the measureRead the answer and worked solution →Complete the meaning of colligativeRead the answer and worked solution →True or false: colligative propertiesRead the answer and worked solution →Tap every statement true of molalityRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Flip and pair: measure with its denominatorRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →
Worked practice questions
For solution of urea (M_w = 60 g/mol) with 6 g in 100 g water, molality:
- 1 m
- 6 m
- 1 m (= 6/60 / 0.1 kg water)
- 0.1 m
Show answer and solution
Correct answer: C. 1 m (= 6/60 / 0.1 kg water)
Moles urea = 6/60 = 0.1 mol.
Kg water = 0.1. Molality = 0.1/0.1 = 1 mol/kg.
ΔT_f = 1.86 × 1 = 1.86 K (freezing pt = -1.86°C).
Complete the two concentration definitions
Read exercise and reference answers
- Missing parts
- Answer
- solution
- Choices
- solution
- solvent
- solute
- Answer
- solvent
- Choices
- solvent
- solution
- solute
- Complete the statement
- Molarity is the number of moles of solute in one litre of {0}. Molality is the number of moles of solute per kilogram of {1}.
One word separates them: solution against solvent. Source: syllabus Chemistry, Ch 1 Solutions.
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