Chemistry Past Questions and Answers

Which of the following statements about an exothermic reaction is correct?

A reducing agent is expected to

Consider the electrochemical cell represented below Zn<sub style='font-size: smaller;'>(s)</sub>/Zn<sup style='font-size: smaller;'>2+</sup><sub style='font-size: smaller;'>(aq)</sub>//Cu<sup style='font-size: smaller;'>2+</sup><sub style='font-size: smaller;'>(aq)</sub>/Cu<sub style='font-size: smaller;'>(s)</sub>. Which of the following equations describes the reaction occurring in the cell?

Five metals represented by the letters V to Z are arranged in order of their reactivity as shown . V>W>X>Y>Z.<br/>Which of the metals cannot displace Y from an aqueous solution of its salt?

Five metals represented by the letters V to Z are arranged in order of their reactivity as shown . V>W>X>Y>Z.<br/>Which of the metals is most likely extracted by the electrolysis of its fused chloride?