For the following scenarios, determine if the error will cause the molarity of t

Question

For the following scenarios, determine if the error will cause the molarity of the hydrochloric acid to be greater than, less than, or the same as the actual value. a. The student adds too much NaOH to the flask of KHP. b. The student adds 40 mL of water to the hydrochloric acid as opposed to the 25 mL stated in the manual. What is the difference between a weak and strong acid? Which of the following acids arc strong? HNO_3, HCl, HC_2H_3O_2, HF, H_2SO_4, H_3PO_4 Write the balanced chemical equation for the reaction of hydrobromic acid (HBr) with sodium hydroxide. For .50 moles of acid, how many moles of base are needed to completely neutralize the acid? Calculate the molarity of an aqueous NaOH solution if 32.00 mL of it is required to titrate .6789 grams of oxalic acid to a phenolphthalein end-point. The balanced chemical equation is H_2C_2O_4 + 2NaOH rightarrow Na_2C_2O_4 + 2H_2O

Explanation / Answer

2. Strong acids are those which dissociate almost completely and hence provide large H+ concentration and a lower pH. While the weak acid are those which dissociate partially and hence provide lower H+ concentration and higher pH.

Out of the given options HNO3, HCl,H2SO4 and H3PO4 are strong acids.

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