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Look up the known literature values for the pKa, Ka, and molar mass of KHP (Potassium hydrogen phthalate)
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- When calcium carbonate is heated strongly, it evolves carbon dioxide gas. CaCO3(s)CaO(s)+CO2(g) 25 g of CaCO3 is heated, what mass of CO2would be produced? What volume would this quantity of CO2 (CU at STP?before 1959, oxygen was popularly used to define the unit of mol. in 1967, the international committee for weights and measures adopted 12c as a standard to define the mole. what was the major reason for this change?(NH,)OH HCI sodium fluoride lithium bromide ammonium sulfate calcium nitrate magnesium phosphate potassium carbonate
- A 12.3 g sample of an alloy of Mg and Al produces 1.66 mol of H2 when added to excess HCl. What percentage of the alloy is Mg?10Consider the following reaction: 2 NH, (9) + 3 Cl, (9) A mixture is prepared from 15.0 mol of ammonia and 15.0 mol of chlorine gas. Determine the total moles of N, (g) + 6 HCI (g) gas in the container after the reaction has gone to completion.
- Calculate the theoretical yield of NaOH when 4.0 g of Na2O2 reacts with excess water according to the expression: Na2O2 + 2H2O ---> H2O2 + 2NaOHReferences Use the References to access important values if needed for this question. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the unwieldy formula of KHCH404. This is often written in shorthand notation as KHP. If 34.2 mL of a sodium hydroxide solution are needed to neutralize 1.77 grams of KHP, what is the molarity of the sodium hydroxide solution? Submit Answer MWhat is the % by mass of calcium in hydrated calcium chloride CaCl2•2H2O?