Please it's urgent 1. a) Definę the term moleb) A carbonate of metal X has the formular X,CO3. The carbonate reacts with hydrochloric acid according to thefollowing equation:X, CO3 + 2HCl →0.25g of X,CO; was found to neutralize exactly 23.6cm' of hydrochloric acid of concentration 0.15moldm.( RAM for C=12;0=16)i) Calculate the number of moles of hydrochloric acid2XCl +Co2 +H,0Enemoii) Calculate the number of moles of X,CO;iii) Calculate the relative molecular mass of X,CO;iv) Calculate the relative atomic mass of X and hence deduce its identityc) Propanoic acid is a weak acid with an acid dissociation constant of 1.22x 10°moldm³i) Write an equation for the ionization of propanoic acidii) Calculate the pKa for propanoic acidLogiii) Sodium propanoate is made by the titration using 0.1M sodium hydroxide with propanoic acidA: Write an equation for the reactionB: Name a suitable indicator for this titrationiv) A mixture of sodium propanoate and propanoic acid acts as a buffer solution. What is a buffer solution?

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1. a) Definę the term mole b) A carbonate of metal X has the formular X,CO. The carbonate reacts with hydrochloric acid accordino to the following equation: X2 C03 + 2HCI 0.25g of X2CO3 was found to neutralize exactly 23.6cm of hydrochloric acid of concentration 0.15moldm (RAM for C=12;0=16) i) Calculate the number of moles of hydrochloric acid 2XCl + CO, +H20