Which of the following is a property of bases?​

Bases taste bitter, feel slippery, and conduct electricity when dissolved in water. Indicator compounds such as litmus can be used to detect bases. Bases turn red litmus paper blue. The strength of bases is measured on the pH scale.

1) Bases taste bitter – There are very few food materials that are alkaline. It is even more important that care be taken in tasting bases. Tasting of bases is more dangerous than tasting acids because of the property of stronger bases to denturate protein.

2) Bases release a hydroxide ion in water solution.

3)Bases neutralise acids in a neutralization reaction – The word reaction means that an acid plus a base makes water plus a salt. Symbolically where “Y” is the anion of acid “HY”. ‘X’ is the cation of base ‘XOH’ and ‘XY” is the salt in the product, the reaction is

HY + XOH → HOH + XY

4) Bases denature protein – This accounts for the slippery feeling on the hands when exposed to a base. Strong bases that dissolve in water well, such as sodium or potassium lye, are very dangerous because a great amount of the structural material of human beings is made of protein. Serious damage to flesh can be avoided by careful use of strong bases.

5) Bases turn red litmus to blue – This is not to say that litmus is the only acid base indicator, but that it is likely the oldest one.

Answer From Gauth Math

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).