Astudent weighed 1.25 grams of nahco3 pre-weighed 50 ml beaker. in the fume hood, he slowly
added concentrated hcl to the beaker containing the nahco3. he added a total of 4.6 ml of
concentrated hcl. during the reaction, effervescence was observed due to carbon dioxide formation.
the water by-product was removed by heating the beaker and a white crystalline salt, nacl, is left.
lastly, he took the weight of the residue and the beaker after cooling to room temperature.
mass of beaker (g): 28.27 g
mass of nahco3 sample (g): 1.25 g
mass of beaker and residue (g): 29.06 g
volume of concentrated hcl (12moles/l) (ml): 4.6 ml
14. write the balanced chemical equation for the reaction.
15. how many moles of nahco3 are in the sample?
16. how many moles of hcl are there in the sample?
17. how many moles of hcl are required to react completely with nahco3?
18. which reagent is in excess and which reagent is limiting?
19. what is the theoretical yield of nacl in grams?
20. what is the actual yield of nacl in grams?
21. what is the percent yield of nacl in grams?

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Predict the products of the following acid-base reactions, and predict whether the equilibrium lies to the left or to the right of the reaction arrow.part ao2-(aq)+h2o(l)< => express your answer as part of a chemical equation. identify all of the phases in your answer.o2-(aq)+h2o(l) < => oh-(aq)+oh-(aq)part bpredict whether the equilibrium lies to the left or to the right of the equation in previous part.h2o is a stronger acid than oh–, so the equilibrium lies to the right.h2o is a weaker acid than oh–, so the equilibrium lies to the left.h2o is a stronger acid than oh–, so the equilibrium lies to the left.h2o is a weaker acid than oh–, so the equilibrium lies to the right.part cch3cooh(aq)+hs? (aq) < => express your answer as part of a chemical equation. identify all of the phases in your answer.ch3cooh(aq)+hs-(aq) < => h2s(aq)+c2h3o2-(aq)h2s(aq)+c2h3o2-(aq)part dpredict whether the equilibrium lies to the left or to the right of the equation in previous part.ch3cooh is a weaker acid than h2s, so the equilibrium lies to the right.ch3cooh is a weaker acid than h2s, so the equilibrium lies to the left.ch3cooh is a stronger acid than h2s, so the equilibrium lies to the right.ch3cooh is a stronger acid than h2s, so the equilibrium lies to the left.part eno2-(aq)+h2o(l) < => express your answer as part of a chemical equation. identify all of the phases in your answer.no2-(aq)+h2o(l) < => part fpredict whether the equilibrium lies to the left or to the right of the equation in previous part.hno2 is a stronger acid than h2o, so the equilibrium lies to the right.hno2 is a weaker acid than h2o, so the equilibrium lies to the left.hno2 is a stronger acid than h2o, so the equilibrium lies to the left.hno2 is a weaker acid than h2o, so the equilibrium lies to the right.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?