Answer
a) Complete and Balance chemical equation:
$Pb(NO_{3})_{2}(aq) + 2KBr(aq) → PbBr_{2}(s) + 2KNO_{3}(aq)$
Net ionic equation:
$Pb^{+2}(aq) + 2Br^{-2}(aq) → PbBr_{2}(s)$
b) Complete and Balance chemical equation:
$Ca(NO_{3})_{2}(aq) + 2KF(aq) → CaF_{2}(s) + 2KNO_{3}(aq)$
Net ionic equation:
$Ca^{+2}(aq) + 2F^{-1}(aq) → CaF_{2})(s)$
c) Complete and Balance chemical equation:
$Ca(NO_{3})_{2}(aq) + Na_{2}(C_{2}O_{4})(aq) → Ca_(C_{2}O_{4})(s) + 2NaNO_{3}(aq)$
Net ionic equation:
$Ca^{+2}(aq) + (C_{2}O_{4})^{-2}(aq) → Ca_(C_{2}O_{4})(s)$
Work Step by Step
a) Complete and Balance chemical equation:
$Pb(NO_{3})_{2}(aq) + 2KBr(aq) → PbBr_{2}(s) + 2KNO_{3}(aq)$
Net ionic equation:
$Pb^{+2}(aq) + 2Br^{-2}(aq) → PbBr_{2}(s)$
b) Complete and Balance chemical equation:
$Ca(NO_{3})_{2}(aq) + 2KF(aq) → CaF_{2}(s) + 2KNO_{3}(aq)$
Net ionic equation:
$Ca^{+2}(aq) + 2F^{-1}(aq) → CaF_{2})(s)$
c) Complete and Balance chemical equation:
$Ca(NO_{3})_{2}(aq) + Na_{2}(C_{2}O_{4})(aq) → Ca_(C_{2}O_{4})(s) + 2NaNO_{3}(aq)$
Net ionic equation:
$Ca^{+2}(aq) + (C_{2}O_{4})^{-2}(aq) → Ca_(C_{2}O_{4})(s)$