An inorganic salt was analysed to determine its composition. The compound gave a lilac flame in a flame test. After dissolving in water and adding sodium hydroxide solution, a green…

The reaction between hydrogen and nitrogen in the presence of an iron catalyst is known as the Haber process. It is a reversible reaction. The energy profile for this reaction…

Consider the non-radioactive elements in Group 1.Which of the following statements is/are correct about the element with the largest atomic number?1 It has the most vigorous reaction with cold water.2…

Iron is extracted from iron ore (which contains Fe2O3) using carbon monoxide. This overall reaction is slow and so must be heated. The chemical equation for this reaction under certain…

A piece of magnesium ribbon is dropped into a beaker of dilute aqueous hydrochloric acid at room temperature. After a while the production of bubbles of gas slows down. Which…

Mohr’s Salt is a common laboratory reagent. Use the information of the most abundantisotopes below to calculate the formula mass, Mr , of the hydrated salt.Formula of Mohr’s Salt: (NH4)2Fe(SO4)2.6H2OMost…

Which of the following statements about the alkali metal rubidium is correct? Answer: 10) D Firstly, alkali metals are the elements in group 1 of the periodic table. A –…