The color of phenolphthalein in an acidic solution is__________ The color of phe
ID: 926853 • Letter: T
Question
The color of phenolphthalein in an acidic solution is__________ The color of phenolphthalein in a basic solution is_________ Rank the acids at right from weakest to strongest. HClO_3 HCLO_2 HCLO_4 Write the equlibrium law for the dissociation of nitrous acid.__________ What are the 4 strong acids____ Write the equlibrium law for each of these precipitates. M_n(SO_4)_3____ Al_2(SO_3)_3___ An exothermic reaction causes the temperature to go________ An endothermic reaction causes the temperature to go__________ Study the wqulibrium below. An increase in the volume of the container will cause a shift to the_________ An increase in pressure will cause a shift to the _________ A decrease in temperature will cause a shift to the_________ A decrease in [O_2] will cause a shift to the___-What will happen to the (H_2 O) if the temperature is increased_______ What will happen to the [O_2] is the pressure is decreased________ K_A for a weak acid is 2.6 x 10^-4. What is K_s. for this acid's conjugate base_________ Write an equation showing how the conjugate of hydrocyanic acid produces OH in water Write an equation showing how acetate, CH_3COO produces OH' in water. Label the acidic hydrogen atoms(s) in the molecule below. Label the nonacidic hydrogen atom(s) in the molecule below.Explanation / Answer
22. Phenolphthalein is often used as an indicator in acid-base titrations. The colour of phenolphthalein in an acedic solution is colourless.
23. The colour of phenolphthalein in basic solution is pink.
24. If the oxidation number of acid increases, than acidic strength also increases.
Cl oxdiation number In chlorous acid(HClO2) is +3
Cl oxidation number in chloric acid (HClO3) is + 5
Cl oxidation number in per chloric acid (HClO4) is + 7
the acidity rank from weakest to strongest is HClO2<HClO3<HClO4
26. Four strong acids HCl(Hydro chloric acid),HNO3 (Nitric acid), H2SO4 (Sulphuric acid),HBr (Hydro bromic acid)