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ÄÁÅÙÃ÷ | contents |
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½ºÅ͵ð | study |
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À¯Ã¼¿ªÇÐ ºñÁß¹®Á¦ ¾ÆÁÖ °£´ÜÇÑ Áú¹® |
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Hydrometers are used in the wine and beer industries to measure the alcohol content of the product. this is accomplished by measuring the specific gravity of the liquid before fermentation, during fermentation, or after fermentation is complete. during fermentation, glucose(C6H12O6)is converted to ethyl alcohol(CH3CH2OH) and carbon dioxide gas, which escape from the vat.
C6H12O - > 2(CH3CH2OH) + 2(CO2)
Brewer£§s yeast tolerates alcohol contents to approximately 5% before fermentation stops, whereas wine yeast tolerates alcohol contents up to 21% depending on the yeast strain. the specific gravity of alcohol is 0.80, and the maximum specific gravity of sugar in solution is 1.59. if a wine has a specific gravity of 1.08 before fermentation, and all the sugar is converted ti alcohol, what will be the final specific gravity of the wine and the percent alcohol content by volume? assume that the initial liquid(the unfermented wine is called must) contains only sugar and water.
Hydrometer : ¾×ü ºñÁß°è
specific gravity : ºñÁß
tolerate : ~¿¡ ´ëÇØ ³»¼ºÀÌ ÀÖ´Ù.
glucose : Æ÷µµ´ç
converted : ~À¸·Î ¹Ù²î´Ù
in solution : ¾×ü»óÅÂ
fermentation : ¹ßÈ¿
Brewer£§s yeast : ¾çÁ¶¿ë ´©·è(È¿¸ð)
Á¦°¡ Çؼ®ÇѰ͵µ ¿Ã·Á³õÀ»²²¿ä. ¸ÂÀ»Áö´Â ¸ð¸£°Ú¾î¿ä.
¾×üºñÁß°è´Â ¿ÍÀΰú ¸ÆÁÖ »ê¾÷¿¡¼ »óÇ°ÀÇ ¾ËÄÝÇÔÀ¯·®À» ÃøÁ¤Çϴµ¥ »ç¿ëµÇ¾îÁ® ¿Ô´Ù. ÀÌ°ÍÀº ¹ßÈ¿ÀüÀ̳ª ¹ßÈ¿Áß, ¶Ç´Â ¹ßÈ¿°¡ ¿Ï·áµÈÈÄÀÇ ºñÁßÀ» ÃøÁ¤ÇÑ´Ù. ¹ßÈ¿Áß¿¡´Â Æ÷µµ´çÀÌ ¿¡Æ¿¾ËÄÝ°ú ÀÌ»êÈź¼Ò·Î º¯È¯µÈ´Ù.
¾çÁ¶¿ë È¿¸ð´Â ¹ßÈ¿°¡ ¸ØÃß±â Àü¿¡ ¾à 5%ÀÇ ¾ËÄÝÇÔÀ¯·®¿¡ ´ëÇÑ ³»¼ºÀÌ ÀÖ´Â¹Ý¸é ¿ÍÀοë È¿¸ð´Â Ç°Á¾¿¡ µû¶ó 21%±îÁö ¾ËÄÝÇÔÀ¯·®¿¡ ´ëÇÑ ³»¼ºÀÌ ÀÖ´Ù. ¾ËÄÝÀÇ ºñÁßÀº 0.80ÀÌ°í ¼³ÅÁ¹°ÀÇ ÃÖ´ë ºñÁßÀº 1.59ÀÌ´Ù. ¸¸¾à ¹ßÈ¿ÀÌÀü ¿ÍÀÎÀÇ ºñÁß°ªÀÌ 1.08À» °¡Áö°í ¼³ÅÁÀÌ ¾ËÄÝ·Î ¿ÏÀüÈ÷ º¯È¯µÇ¾ú´Ù¸é, ¿ÍÀÎÀÇ ÃÖÁ¾ ºñÁß°ª°ú ¾ËÄÝÇÔÀ¯·®ÀÇ ºÎÇÇ %´Â ¾ó¸¶Àΰ¡?
initial ¿ë¾×Àº ¿ÀÁ÷ ¼³ÅÁ°ú ¹°¸¸À» Æ÷ÇÔÇÑ´Ù°í °¡Á¤ÇÏÀÚ.
¸¶Áö¸· Çؼ®ÀÌ Á» ÀÌ»óÇϳ׿ä;; by volume¿¡¼ ¸·Çû´Ù´Â;
³ª¸§´ë·Î À̸®µµ Ç®¾îº¸°í Àú¸®µµ Ç®¾îºÃ´Âµ¥ ¾Æ¹«°Íµµ ¸ð¸£´Â »óÅ¿¡¼ ÇÏ·Á´Ï Á¤¸» Èûµé°í ¸·¸·ÇÕ´Ï´Ù>_<
¹¹ ¾Æ¹«°Íµµ ¾ÈÇغ¸°í ¹°¾îº¸´Â ±×·± ÇлýÀº ¾Æ´Ï´Ï±î Á¦¹ß Á¶¾ðÀÌ¶óµµ ÇØÁÖ½Ã¸é °¨»çÇÏ°Ú½À´Ï´Ù. ·¹Æ÷Æ® ³»ÀϱîÁö ½á¾ß Çϰŵç¿ä.
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