Write the chemical formula for the sulfate ion 4+ 3+ 2+ + 4- 0 8 7 6 5 3 2 1 19 6 5 7 8 12 (aq) (g) (1) (s) C( S Su F Te At S LO

The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH; (g) + 5 0, (g) = 4 NO (g) + 6 H,0 (g) K1 2 NO (3) +0, (g) = 2NO, (g) K2 The net reaction is: 4 NH; (g) + 70, (g) = 4 NO, (g) + 6 H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K = olo

bnuo wans 1uoy 1ot enoesen llut gnivig 29lgns nsvslen "The position of the halogens (X) in the periodic table implies that the chemistry of the group is dominated by formation of compounds in which oxidation state (I) predominates". Discuss this statement fully using reactions and examples

(i) Cú +) Li CI

Sodium chloride and strontium chloride are both white solids. How could you distinguish one from the other?

Is polonium ionic or covalent ?

Part J Which equation correctly represents the first ionisation of magnesium? O Mg(g)→Mg¯(g) + e¯ O Mgt (g) + e¯→Mg(g) O Mg(g)→Mg+ (g) + e O Mg(g) + e→Mg (g) O Mg (g)→Mg(g) + e¯

Which of these reactions will not produce hydrogen gas when carried out at room temperature?          (A) Li(s)  +  H2O(l)  --> ?          (B) Na(s)  +  H2O(l)  -->  ?          (C) Mg(s)  +  H2O(l)  --> ?          (D) Ca(s)  +  H2O(l)  --> ?

Give detailed Solution with explanation needed..don't give Handwritten answer

2 HC= CH + 5 O2 > 4 co2 + 2 h2o What is the energy of the reaction and is it exo- or endothermic?