Chemistry Grade 10 74. Balance the following equations using any method: H_(3)BO_(3)arrow H_(2)B_(6)O_(11)+H_(2)O b P_(2)l_(4)+P_(4)+H_(2)Oarrow PH_(4)I+H_(3)PO_(4) HClO_(4)+P_(4)O_(10)arrow H_(3)PO_(4)+Cl_(2)O_(7) d. H_(2)S+HNO_(3)arrow S+NO+H_(2)O H_(2)SO_(4)+HBrarrow SO_(2)+Br_(2)+H_(2)O f. KMnO_(4)+HClarrow NnCl_(2)+Cl_(2)+KCl+H_(2)O K+KNO_(3)arrow N_(2)+K_(2)O 9.

Let's balance each equation step by step:<br /><br />a. $H_{3}BO_{3}\rightarrow H_{2}B_{6}O_{11}+H_{2}O$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. <br /><br />$H_{3}BO_{3}\rightarrow H_{2}B_{6}O_{11}+H_{2}O$<br /><br />Balanced equation: $6H_{3}BO_{3}\rightarrow H_{2}B_{6}O_{11}+9H_{2}O$<br /><br />b. $P_{2}l_{4}+P_{4}+H_{2}O\rightarrow PH_{4}I+H_{3}PO_{4}$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.<br /><br />$P_{2}l_{4}+P_{4}+H_{2}O\rightarrow PH_{4}I+H_{3}PO_{4}$<br /><br />Balanced equation: $P_{2}l_{4}+P_{4}+6H_{2}O\rightarrow 2PH_{4}I+2H_{3}PO_{4}$<br /><br />c. $HClO_{4}+P_{4}O_{10}\rightarrow H_{3}PO_{4}+Cl_{2}O_{7}$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.<br /><br />$HClO_{4}+P_{4}O_{10}\rightarrow H_{3}PO_{4}+Cl_{2}O_{7}$<br /><br />Balanced equation: $12HClO_{4}+P_{4}O_{10}\rightarrow 4H_{3}PO_{4}+6Cl_{2}O_{7}$<br /><br />d. $H_{2}S+HNO_{3}\rightarrow S+NO+H_{2}O$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.<br /><br />$H_{2}S+HNO_{3}\rightarrow S+NO+H_{2}O$<br /><br />Balanced equation: $3H_{2}S+2HNO_{3}\rightarrow 3S+2NO+4H_{2}O$<br /><br />e. $H_{2}SO_{4}+HBr\rightarrow SO_{2}+Br_{2}+H_{2}O$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.<br /><br />$H_{2}SO_{4}+HBr\rightarrow SO_{2}+Br_{2}+H_{2}O$<br /><br />Balanced equation: $H_{2}SO_{4}+2HBr\rightarrow SO_{2}+Br_{2}+2H_{2}O$<br /><br />f. $KMnO_{4}+HCl\rightarrow MnCl_{2}+Cl_{2}+KCl+H_{2}O$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.<br /><br />$KMnO_{4}+HCl\rightarrow MnCl_{2}+Cl_{2}+KCl+H_{2}O$<br /><br />Balanced equation: $2KMnO_{4}+16HCl\rightarrow 2MnCl_{2}+5Cl_{2}+2KCl+8H_{2}O$<br /><br />g. $K+KNO_{3}\rightarrow N_{2}+K_{2}O$<br />To balance this equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.<br /><br />$K+KNO_{3}\rightarrow N_{2}+K_{2}O$<br /><br />Balanced equation: $10K+2KNO_{3}\rightarrow N_{2}+5K_{2}O$