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Recent content by easchemistry12

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    Chemistry: Post your doubts here!

    One mole of sulfuric acid is used to make an aqueous solution. The solution contains H2SO4 molecules, H+ ions, SO4 2– ions and HSO4– ions. Which statements are correct? 1 The solution contains 6.02 × 1023 sulfur atoms. 2 The solution contains an exactly equal number of H+ ions and HSO4– ions. 3...
  2. E

    Chemistry: Post your doubts here!

    Ms says correct answer is D can anyone please help me with justification of answer and why option A is not correct?
  3. E

    Chemistry: Post your doubts here!

    thank u
  4. E

    Chemistry: Post your doubts here!

    thank u
  5. E

    Chemistry: Post your doubts here!

    Compound X produces a carboxylic acid when heated under reflux with acidified potassium dichromate(VI). Compound X does not react with sodium metal. What could be the identity of compound X? A propanal B propanone C propan-1-ol D propan-2-ol answer is propanal but why?
  6. E

    Chemistry: Post your doubts here!

    thanks i got that.............
  7. E

    Chemistry: Post your doubts here!

    A solution contains both Mg2+(aq) and Sr2+(aq) at the same concentration. The solution is divided into two equal portions. Aqueous sodium hydroxide is added dropwise to one portion. Dilute sulfuric acid is added dropwise to the other portion. Which row is correct?
  8. E

    Chemistry: Post your doubts here!

    X, Y and Z are three elements in the third period. ● X reacts with chlorine to give a liquid product. ● Y reacts with chlorine to give a solid product that dissolves in water to give a solution of pH 7. ● Z reacts with chlorine to give a solid product that dissolves in water to give a solution...
  9. E

    chemistry question please help

    Sodium hydroxide neutralises acid. H+ + OH– → H2O In a 11 000 dm3 sample of an aqueous solution, the concentration of acid, [H+], is 1.26 × 10– 3 mol dm–3. Which mass of solid sodium hydroxide neutralises the acid?
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