Archives

{“questions”:{“1rbid”:{“id”:”1rbid”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2003\r\n\r\n \r\nL\u2019acido nitrico \u00e8 forte, l\u2019acido nitroso \u00e8 debole; il pH di una soluzione acquosa di acido nitroso risulter\u00e0 sicuramente maggiore di quello di una soluzione acquosa di …

{“questions”:{“7jx01”:{“id”:”7jx01″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2003\r\n\r\n \r\nUna soluzione di acido formico 0,1 M (Ka = 4,8×10\u20135) \u00e8: “,”desc”:””,”hint”:””,”answers”:{“6vu3t”:{“id”:”6vu3t”,”image”:””,”imageId”:””,”title”:”A) neutra “},”102ip”:{“id”:”102ip”,”image”:””,”imageId”:””,”title”:”B) meno acida di una soluzione 0,1 M di acido cloridrico “,”isCorrect”:”1″},”uncaq”:{“id”:”uncaq”,”image”:””,”imageId”:””,”title”:”C) basica “},”2fc52”:{“id”:”2fc52″,”image”:””,”imageId”:””,”title”:”D) …

{“questions”:{“s939i”:{“id”:”s939i”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2002\r\n\r\n \r\nLa soluzione di un acido forte: \r\n“,”desc”:””,”hint”:””,”answers”:{“csopp”:{“id”:”csopp”,”image”:””,”imageId”:””,”title”:”A) ha pH maggiore di pOH “},”as8ru”:{“id”:”as8ru”,”image”:””,”imageId”:””,”title”:”B) ha pOH minore di quello di una soluzione di un acido debole ad uguale …

{“questions”:{“v05j7”:{“id”:”v05j7″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2001\r\n\r\n \r\nUna soluzione acquosa 0,0001 M di un acido debole presenta una concentrazione di ioni idronio\r\n“,”desc”:””,”hint”:””,”answers”:{“v5oi2”:{“id”:”v5oi2″,”image”:””,”imageId”:””,”title”:”A) 10\u20133 M”},”vcp25″:{“id”:”vcp25″,”image”:””,”imageId”:””,”title”:”B) 10\u20134 M”},”zp3vn”:{“id”:”zp3vn”,”image”:””,”imageId”:””,”title”:”C) minore di 10\u20134M”,”isCorrect”:”1″},”9vn89″:{“id”:”9vn89″,”image”:””,”imageId”:””,”title”:”D) maggiore di 10\u20132 M”},”u3bqh”:{“id”:”u3bqh”,”image”:””,”imageId”:””,”title”:”E) 10\u20132 …

{“questions”:{“67g4d”:{“id”:”67g4d”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2012\r\n\r\n \r\nIndividuare la successione corretta che ordina, in base al PH crescente, le seguenti soluzioni acquose:\r\n\r\na) NH3 0,1 M\r\nb) HNO3 0,1 M\r\nc) KOH 0,1 M\r\nd) HNO3 0,001 M\r\ne) …

{“questions”:{“59edz”:{“id”:”59edz”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2004\r\n\r\n \r\nQuante moli di HCl sono presenti in 100 litri di soluzione acquosa di tale sostanza a pH = 5 ?\r\n“,”desc”:””,”hint”:””,”answers”:{“4ijld”:{“id”:”4ijld”,”image”:””,”imageId”:””,”title”:”A) 0,00001″},”7ejak”:{“id”:”7ejak”,”image”:””,”imageId”:””,”title”:”B) 0,005″},”skllb”:{“id”:”skllb”,”image”:””,”imageId”:””,”title”:”C) 0,001″,”isCorrect”:”1″},”p9kve”:{“id”:”p9kve”,”image”:””,”imageId”:””,”title”:”D) 0,000001″},”oe2fe”:{“id”:”oe2fe”,”image”:””,”imageId”:””,”title”:”E) 100″}}}},”results”:{“r8mub”:{“id”:”r8mub”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Gli acidi …

{“questions”:{“n83yn”:{“id”:”n83yn”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2015\r\n\r\n \r\nDell\u2019acqua viene aggiunta a 10 cm\u20123 di una soluzione acquosa di acido cloridrico 2 mol dm\u20123 in modo da ottenere 1000 cm\u20123 di acido cloridrico diluito. Di …

{“questions”:{“48dkl”:{“id”:”48dkl”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2004\r\n\r\n \r\nIn che rapporto deve essere diluita una soluzione acquosa di un acido forte affinch\u00e9 il pH passi da 4 a 5?\r\n“,”desc”:””,”hint”:””,”answers”:{“cv6oe”:{“id”:”cv6oe”,”image”:””,”imageId”:””,”title”:”A) 1:10″,”isCorrect”:”1″},”mv3br”:{“id”:”mv3br”,”image”:””,”imageId”:””,”title”:”B) 4:5″},”qsyak”:{“id”:”qsyak”,”image”:””,”imageId”:””,”title”:”C) 1:1″},”q1dht”:{“id”:”q1dht”,”image”:””,”imageId”:””,”title”:”D) 5:4″},”00icp”:{“id”:”00icp”,”image”:””,”imageId”:””,”title”:”E) 1:9″}}}},”results”:{“ulrwu”:{“id”:”ulrwu”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Per …

{“questions”:{“yqhwc”:{“id”:”yqhwc”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2001\r\n\r\n \r\nSe si diluisce 1 L di soluzione acquosa a pH=2, aggiungendo acqua fino al volume di 10 L, il pH:\r\n“,”desc”:””,”hint”:””,”answers”:{“k9sj6”:{“id”:”k9sj6″,”image”:””,”imageId”:””,”title”:”A) diventa 10″},”sy27m”:{“id”:”sy27m”,”image”:””,”imageId”:””,”title”:”B) diventa 1″},”nmdmy”:{“id”:”nmdmy”,”image”:””,”imageId”:””,”title”:”C) diventa 2.1″},”enh8e”:{“id”:”enh8e”,”image”:””,”imageId”:””,”title”:”D) non …

{“questions”:{“a6mf8”:{“id”:”a6mf8″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1999\r\n\r\n \r\nA quale volume bisogna diluire 10 mL di HCl 6 M per ottenere HCl 0,5 M ?\r\n“,”desc”:””,”hint”:””,”answers”:{“ehmar”:{“id”:”ehmar”,”image”:””,”imageId”:””,”title”:”A) 60 mL”},”zdipm”:{“id”:”zdipm”,”image”:””,”imageId”:””,”title”:”B) 30 mL”},”f8drr”:{“id”:”f8drr”,”image”:””,”imageId”:””,”title”:”C) 300 mL”},”z4akq”:{“id”:”z4akq”,”image”:””,”imageId”:””,”title”:”D) 120 mL”,”isCorrect”:”1″},”p8e65″:{“id”:”p8e65″,”image”:””,”imageId”:””,”title”:”E) 200 mL”}}}},”results”:{“ho8nb”:{“id”:”ho8nb”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” …