30 Questions
What is the formula to calculate the number of moles of a solute?
Molarity × No. of liters of the solution
What is the equivalent mass of HSO₄⁻?
49.0
What is the relationship between molarity and normality in acid-base reactions?
Normality = Molarity × Acid/base equivalent
What is the formula to calculate the strength of a solution?
Molarity × Molecular mass
What is the equivalent mass of CH₃COOH?
60.0
What is the equivalent mass of H2SO4 in the reaction 2NaCl + H2SO4 → Na2SO4 + 2HCl?
49 g
What is the normality of a solution containing 31.6 g of KMnO4 in 1 litre of solution, considering the reaction in acidic medium?
1 N
What is the strength of a solution containing 98 g of H2SO4 in 1 litre of solution, considering the reaction 2NaCl + H2SO4 → 2NaHSO4 + 2HCl?
98 g/L
If 2 mole of NaOH reacts with 1 mole of H2SO4, what is the normality of the resulting solution?
2 N
What is the relationship between molarity and normality for a solution of acid?
Normality = n × Molarity
What is the formula for calculating the number of milli-equivalents of a substance?
Mass in g × 1000 / Equivalent mass
If a solution of acid A has a normality of 0.5 N and a volume of 250 mL, and a solution of acid B has a normality of 0.25 N and a volume of 500 mL, what is the relationship between the two solutions?
Normality of A × volume of A = Normality of B × volume of B
What is the equivalent mass of a metal hydroxide if the equivalent mass of the metal oxide is 40 and the equivalent mass of the metal is 20?
40 + 8
What happens when a solution of calcium hydroxide is reacted with carbon dioxide?
It turns milky
What is the relationship between the normality of a solution before and after dilution?
N1 × V1 = N2 × V2
What is the characteristic smell of NH₃?
Ammonical smell
What is the result of the reaction between NH₃ and HCl?
NH₄Cl
What is the result of the reaction between CO₂ and lime water?
CaCO₃
What is the colour of the precipitate formed when NH₃ reacts with Nessler's reagent?
Brown
What is the result of the reaction between NH₃ and CuSO₄ solution?
Deep blue colour
What is the effect of CO₂ on a solution of calcium hydroxide?
It turns the solution milky
What is the purpose of using an asbestos fibre instead of a glass rod in a flame test?
To prevent the presence of sodium in the test
What is the composition of the transparent bead formed in the borax bead test?
NaBO + B₂O₃
What is the advantage of the filter ash test over the cobalt nitrate test?
It gives better results
What is the effect of SO₂ on lime water?
It turns the solution milky
What is the product of the reaction between ethanol and nitric acid?
Triethyl borate
What is the purpose of adding Cu and freshly prepared FeSO4 solution in the ring test?
To detect the presence of nitrate ions
What is the result of the reaction between sodium oxalate and sulfuric acid?
Formation of sodium sulfate, water, and carbon dioxide
What is the test used to detect the presence of fluoride ions?
Fluoride test using salt and sulfuric acid
What is the color of the flame produced by the burning of ethanol in the presence of copper?
Brown
Complexometric titrations involve the formation of undissociated complexes at the equivalence point. EDTA is a useful reagent in estimating Ca2+ and Mg2+ ions. Learn about the advantages of complexometric titrations over precipitation titrations.
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