Complete and balance the following equations: (a) NaH(s) + H,O(1) (b) Fe(s) + H,SO,(aq) (c) H2(8) + Br,(8) (d) Na(1) + H2(8) (e) PbO(s) + H2(8)

1. a) Write the formula for the conjugate base of HPO4^-2  b) Write the formula for the conjugate acid of NH3

Give the Stock system name for the following. (a)    Fe(NO3)3(b)    Au2S(c)    CuI

Write the balanced NET ionic equation for the reaction when (NH4)2CO3 and CaCl2 are mixed in aqueous solution. If no reaction occurs, simply write only NR.

Write the balanced NET ionic equation for the reaction when (NH4)2CO3 and CaCl2 are mixed in aqueous solution. If no reaction occurs, simply write only NR.

Based on the relative reactivity of the halogens as oxidizing agents, predict the products of the following reaction. If no reaction will occur, leave the product boxes blank. 12(s) + 2Cl-(aq) +

1). (NH4);PO4 + Pb(NO3)a > Pb3(POa)a +. _NH,NO3 23.98 grams of lead (IV) nitrate are needed to create how many grams of ammonium nitrate?

Balance the following chemical equation (if necessary): BF;(s) + Li,So;(s) → LiF(s) + B2(So;); (s)

Balance the equations below assuming they occur in an acidic solution.(a) H2 O2 + Sn^2+ ⟶ H2 O + Sn^4+(b) PbO2 + Hg ⟶ Hg2^2+ + Pb^2+(c) Al + Cr2 O7^2− ⟶ Al^3+ + Cr^3+

2.2 6. (1) Define pH in words. The strong acid HClag has a pH value of 1, use the following equation for a strong acid: Claa HClaa Hog + and convert the following expression to deduce the hydrogen ion concentration: pH = -log10 [H+] (ii) Use the above expression to deduce the pH of HCl (ag) given the concentration of the acid to be 4.5 mol/dm³ pH =