The indicator used in the titration of iodine against sodium thiosulphate is
Options
(a) starch (b) K₃ [Fe(CN)₆] (c) K₂CrO₄ (d) potassium
Correct Answer:
starch
Explanation:
No explanation available. Be the first to […]
In which of the following reaction Kp > Kc
Options
(a) PCl₃ + Cl₂ → PCl₅ (b) N₂ + 3H₂ → 2NH₃ (c) 2SO₃ → O₂ + 2SO₂ (d) H₂ + I₂ → […]
At 25⁰C the pH value of a solution is 6, then the solution is
Options
(a) acidic (b) neutral (c) basic (d) alkaline
Correct Answer:
acidic
Explanation:
No explanation available. Be the first […]
The precipitation occurs if ionic product is
Options
(a) equal to solubility product (b) less than solubility product (c) more than solubility product (d) equal or less than solubility product
Correct Answer:
more […]
Which of the following has lowest pH value
Options
(a) 1 M HCl (b) 1 M NaOH (c) 1 M H₂SO₄ (d) 1 M C₂H₅OH
Correct Answer:
1 M H₂SO₄
Explanation:
No explanation […]
Which of the following has highest pH value with water
Options
(a) NaHCO₃ (b) NaCl (c) KCl (d) Na₂CO₃
Correct Answer:
Na₂CO₃
Explanation:
No explanation available. Be the first to write the explanation […]
pH value of a solution, whose hydronium ion concentration is 6.2 x 10⁻⁹ mol/L is
Options
(a) 7.75 (b) 7.21 (c) 8.21 (d) 6.21
Correct Answer:
8.21
Explanation:
No explanation available. Be the […]
If the hydrogen ion concentration of an acid decreases 10 times, its pH value
Options
(a) remains unchanged (b) increases by one (c) increases by 10 (d) decreases by one
Correct Answer:
increases […]
The correct order of acidic strength is
Options
(a) HBr < HCl < HI < HF (b) HCl < HBr < HF < HI (c) HF < HCl < HBr < HI (d) […]
In the titration of strong acid and weak base, the indicator used is
Options
(a) thymolphthalein (b) methyl orange (c) thymolblue (d) phenolphthalein
Correct Answer:
methyl orange
Explanation:
No explanation available. Be the […]
2017 Copyright Doctor Dreams Training Academy