Question

1.) 1.0 M HCl took 10 drops of 1.0 M NaOH, 1.0M H2SO4 took 21 drops of 1.0 M NaOH. Write balanced equations for the reactions that occured and use them to explain the difference. 2.)Check the content label of the TUMS. the gas generated by the raction of TUMS with HCl solution was ____. Write the balanced chemical equation for the reaction that occured. 3.) The gas evolved when HCl solution reacts with CaCO3 is _____. Explain how you know and write the balanced chemical equation.

Answer 1

Ans 1 :

HCl is a monoprotic acid. 1 mole of the acid will give 1 mole of protons.

NaOH is monobasic acid . 1 Mole of it will have 1 mole of hydroxide ions.

H2SO4 is a diprotic acid , 1 mole of it will give 2 moles of the protons.

So now when certain volume of HCl will require a certain volume of NaOH , to get neutralised completely , H2SO4 will require completely double of the volume of NaOH.

This can also be judged when we see the formula :
M1 V1 / n1 = M2 V2 / n2

Where M is Molarity , V is volume and n is number of moles.