Chemistry Past Questions and Answers

NH<sub style='font-size: smaller;'>3</sub> + H<sub style='font-size: smaller;'>3</sub>O<sup style='font-size: smaller;'>+</sup><br/>→ NH<sub style='font-size: smaller;'>4</sub><sup style='font-size: smaller;'>+</sup> + H<sub style='font-size: smaller;'>2</sub>O. It may be deduced from the reaction above that?

4.0 g of sodium hydroxide in 250 cm<sup style='font-size: smaller;'>3</sup> of solution contains?

During the electrolysis of a salt of a metal M, a current of 0.5 A flows from for 32 minutes 10 seconds and deposits 0.325 g of M, What is the charge of the metal ion?<br/>(M = 65, If = 96,500 C per mole of electron)

Which of the reactions occurs at the anode during the electrolysis of a very dilute aqueous solution of sodium chloride?

The oxidation states of chlorine in HOCL, HCLO<sub style='font-size: smaller;'>3</sub> and HCLO<sub style='font-size: smaller;'>4</sub> are respectively?