The Senate approved the legislation earlier Wednesday in a 78-20 vote, and Obama signed it into law that evening. All 20 ânoâ votes in the Senate came from Republicans, though Sens. Marco Rubio (R-Fla.) and Lindsey Graham (R-S.C.), both running for president, missed the vote. Without action by Congress, the federal government would have shut down on Thursday, the beginning of a new fiscal year.
A buffer is made by mixing a large volume of a weak acid or weak base together with its conjugate. A weak acid and its conjugate base can remain in solution without neutralizing each other.
It is only after the equivalence point that things become different. A buffer solution is formed containing excess ammonia and ammonium chloride. This resists any large increase in pH - not that you would expect a very large increase anyway, because ammonia is only a weak base. Titration curves for weak acid v strong base